Mercurial > hg > nginx-site
annotate xml/en/docs/njs/reference.xml @ 2532:423d813dc8bb
Documented support for multi-value headers in r.headersOut.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Thu, 23 Apr 2020 12:57:43 +0100 |
parents | 6ce28e0beec0 |
children | d6bbfd20c82f |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Nginx, Inc. |
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5 --> |
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6 |
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7 <!DOCTYPE article SYSTEM "../../../../dtd/article.dtd"> |
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8 |
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9 <article name="Reference" |
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10 link="/en/docs/njs/reference.html" |
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11 lang="en" |
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12 rev="39"> |
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13 |
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14 <section id="summary"> |
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15 |
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16 <para> |
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17 <link doc="index.xml">njs</link> provides objects, methods and properties |
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18 for extending nginx functionality. |
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19 </para> |
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20 |
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21 </section> |
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22 |
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23 |
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24 <section id="http_stream" name="nginx objects"> |
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25 |
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26 |
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27 <section id="http" name="HTTP Request"> |
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28 |
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29 <para> |
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30 The HTTP request object is available only in the |
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31 <link doc="../http/ngx_http_js_module.xml">ngx_http_js_module</link> module. |
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32 All string properties of the object are <link id="string">byte strings</link>. |
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33 |
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34 <list type="tag"> |
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35 |
2353 | 36 <tag-name id="r_args"><literal>r.args{}</literal></tag-name> |
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37 <tag-desc> |
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38 request arguments object, read-only |
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39 </tag-desc> |
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40 |
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41 <tag-name><literal>r.error(<value>string</value>)</literal></tag-name> |
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42 <tag-desc> |
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43 writes a <literal>string</literal> to the error log |
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44 on the <literal>error</literal> level of logging |
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45 </tag-desc> |
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46 |
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47 <tag-name><literal>r.finish()</literal></tag-name> |
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48 <tag-desc> |
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49 finishes sending a response to the client |
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50 </tag-desc> |
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51 |
2353 | 52 <tag-name id="r_headers_in"><literal>r.headersIn{}</literal></tag-name> |
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53 <tag-desc> |
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54 incoming headers object, read-only. |
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55 <para> |
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56 For example, the <literal>Foo</literal> header |
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57 can be accessed with the syntax <literal>headersIn.foo</literal> |
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58 or <literal>headersIn['Foo']</literal> |
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59 <note> |
2446 | 60 Before version <link doc="changes.xml" id="njs0.3.6">0.3.6</link>, |
61 for headers that could appear multiple times such as | |
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62 <header>Cookie</header> or <header>X-Forwarded-For</header>, |
2446 | 63 only the first value was returned. |
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64 To get all cookies, |
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65 <literal>r.variables.http_cookie</literal> |
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66 should be used. |
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67 To get the <literal>name</literal> cookie, |
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68 <literal>r.variables["cookie_<value>name</value>"]</literal> |
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69 should be used. |
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70 </note> |
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71 </para> |
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72 </tag-desc> |
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73 |
2331 | 74 <tag-name id="r_headers_out"><literal>r.headersOut{}</literal></tag-name> |
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75 <tag-desc> |
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76 outgoing headers object, writable. |
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77 <para> |
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78 The <header>Foo</header> response header |
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79 can be accessed with the syntax: |
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80 <literal>headersOut.foo</literal> or <literal>headersOut['Foo']</literal>. |
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81 </para> |
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82 |
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83 <para> |
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84 Field values of multi-value response headers |
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85 (<link doc="changes.xml" id="njs0.4.0">0.4.0</link>) |
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86 can be set with the syntax: |
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87 <example> |
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88 r.headersOut[‘Foo’] = [‘a’, ‘b’] |
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89 </example> |
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90 where the output will be: |
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91 <example> |
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92 Foo: a |
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93 Foo: b |
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94 </example> |
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95 All previous field values of the <header>Foo</header> response header |
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96 will be deleted. |
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97 </para> |
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98 |
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99 <para> |
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100 For standard response headers |
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101 that accept only a single field value such as |
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102 <header>Content-Type</header>, |
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103 only the last element of the array will take effect. |
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104 Duplicate field values in |
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105 <header>Age</header>, |
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106 <header>Content-Encoding</header>, |
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107 <header>Content-Length</header>, |
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108 <header>Content-Type</header>, |
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109 <header>ETag</header>, |
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110 <header>Expires</header>, |
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111 <header>Last-Modified</header>, |
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112 <header>Location</header>, |
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113 <header>Retry-After</header> |
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114 response headers are ignored. |
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115 All other duplicate field values of the response header |
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116 are joined together with comma “<literal>,</literal>”. |
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117 Field values of the <header>Set-Cookie</header> response header |
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118 are always returned as an array. |
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119 </para> |
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120 </tag-desc> |
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121 |
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122 <tag-name><literal>r.httpVersion</literal></tag-name> |
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123 <tag-desc> |
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124 HTTP version, read-only |
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125 </tag-desc> |
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126 |
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127 <tag-name><literal>r.log(<value>string</value>)</literal></tag-name> |
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128 <tag-desc> |
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129 writes a <literal>string</literal> to the error log |
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130 on the <literal>info</literal> level of logging |
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131 </tag-desc> |
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132 |
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133 <tag-name id="r_internal_redirect"><literal>r.internalRedirect(<value>uri</value>)</literal></tag-name> |
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134 <tag-desc> |
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135 performs an internal redirect to the specified <literal>uri</literal>. |
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136 If the uri starts with the “<literal>@</literal>” prefix, |
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137 it is considered a named location. |
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138 The actual redirect happens after the handler execution is completed. |
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139 </tag-desc> |
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140 |
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141 <tag-name><literal>r.method</literal></tag-name> |
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142 <tag-desc> |
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143 HTTP method, read-only |
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144 </tag-desc> |
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145 |
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146 <tag-name id="r_parent"><literal>r.parent</literal></tag-name> |
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147 <tag-desc> |
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148 references the parent request object |
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149 </tag-desc> |
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150 |
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151 <tag-name><literal>r.remoteAddress</literal></tag-name> |
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152 <tag-desc> |
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153 client address, read-only |
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154 </tag-desc> |
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155 |
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156 <tag-name id="r_request_body"><literal>r.requestBody</literal></tag-name> |
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157 <tag-desc> |
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158 returns the client request body if it has not been |
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159 written to a temporary file. |
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160 To ensure that the client request body is in memory, |
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161 its size should be limited by |
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162 <link doc="../http/ngx_http_core_module.xml" id="client_max_body_size"/>, |
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163 and a sufficient buffer size should be set using |
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164 <link doc="../http/ngx_http_core_module.xml" id="client_body_buffer_size"/>. |
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165 The property is available only in the |
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166 <link doc="../http/ngx_http_js_module.xml" id="js_content"/> directive. |
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167 </tag-desc> |
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168 |
2353 | 169 <tag-name id="r_response_body"><literal>r.responseBody</literal></tag-name> |
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170 <tag-desc> |
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171 holds the <link id="subrequest">subrequest</link> response body, read-only. |
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172 The size of <literal>r.responseBody</literal> is limited by the |
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173 <link doc="../http/ngx_http_core_module.xml" id="subrequest_output_buffer_size"/> |
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174 directive. |
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175 </tag-desc> |
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176 |
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177 <tag-name><literal>r.return(status[, string])</literal></tag-name> |
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178 <tag-desc> |
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179 sends the entire response |
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180 with the specified <literal>status</literal> to the client |
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181 <para> |
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182 It is possible to specify either a redirect URL |
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183 (for codes 301, 302, 303, 307, and 308) |
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184 or the response body text (for other codes) as the second argument |
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185 </para> |
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186 </tag-desc> |
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187 |
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188 <tag-name><literal>r.send(<value>string</value>)</literal></tag-name> |
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189 <tag-desc> |
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190 sends a part of the response body to the client |
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191 </tag-desc> |
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192 |
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193 <tag-name><literal>r.sendHeader()</literal></tag-name> |
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194 <tag-desc> |
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195 sends the HTTP headers to the client |
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196 </tag-desc> |
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197 |
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198 <tag-name><literal>r.status</literal></tag-name> |
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199 <tag-desc> |
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200 status, writable |
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201 </tag-desc> |
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202 |
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203 <tag-name id="r_variables"><literal>r.variables{}</literal></tag-name> |
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204 <tag-desc> |
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205 nginx variables object, |
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206 writable (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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207 </tag-desc> |
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208 |
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209 <tag-name><literal>r.warn(<value>string</value>)</literal></tag-name> |
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210 <tag-desc> |
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211 writes a <literal>string</literal> to the error log |
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212 on the <literal>warning</literal> level of logging |
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213 </tag-desc> |
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214 |
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215 <tag-name id="r_uri"><literal>r.uri</literal></tag-name> |
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216 <tag-desc> |
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217 current <link doc="../http/ngx_http_core_module.xml" id="var_uri">URI</link> |
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218 in request, |
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219 <link doc="../http/ngx_http_core_module.xml" id="location">normalized</link>, |
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220 read-only |
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221 </tag-desc> |
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222 |
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223 <tag-name id="subrequest"><literal>r.subrequest(<value>uri</value>[, |
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224 <value>options</value>[, <value>callback</value>]])</literal></tag-name> |
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225 <tag-desc> |
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226 creates a subrequest with the given <literal>uri</literal> and |
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227 <literal>options</literal>, and installs |
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228 an optional completion <literal>callback</literal>. |
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229 |
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230 <para> |
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231 A |
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232 <link doc="../dev/development_guide.xml.xml" id="http_subrequests">subrequest</link> |
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233 shares its input headers with the client request. |
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234 To send headers different from original headers to a proxied server, the |
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235 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_set_header"/> |
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236 directive can be used. |
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237 To send a completely new set of headers to a proxied server, the |
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238 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_pass_request_headers"/> |
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239 directive can be used. |
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240 </para> |
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241 |
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242 <para> |
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243 If <literal>options</literal> is a string, then it |
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244 holds the subrequest arguments string. |
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245 Otherwise, <literal>options</literal> is expected to be |
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246 an object with the following keys: |
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247 <list type="tag"> |
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248 <tag-name><literal>args</literal></tag-name> |
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249 <tag-desc> |
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250 arguments string, by default an empty string is used |
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251 </tag-desc> |
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252 <tag-name><literal>body</literal></tag-name> |
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253 <tag-desc> |
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254 request body, |
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255 by default the request body of the parent request object is used |
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256 </tag-desc> |
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257 |
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258 <tag-name><literal>method</literal></tag-name> |
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259 <tag-desc> |
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260 HTTP method, by default the <literal>GET</literal> method is used |
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261 </tag-desc> |
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262 |
2507 | 263 <tag-name><literal>detached</literal></tag-name> |
264 <tag-desc> | |
265 boolean flag (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>), | |
266 if <literal>true</literal>, the created subrequest is a detached subrequest. | |
267 Responses to detached subrequests are ignored. | |
268 Unlike ordinary subrequests, a detached subrequest | |
269 can be created inside a variable handler. | |
270 The detached flag and callback argument are mutually exclusive. | |
271 </tag-desc> | |
272 | |
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273 </list> |
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274 </para> |
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275 |
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276 <para> |
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277 The completion <literal>callback</literal> receives |
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278 a subrequest response object with methods and properties |
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279 identical to the parent request object. |
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280 </para> |
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281 |
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282 <para> |
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283 Since <link doc="changes.xml" id="njs0.3.8">0.3.8</link>, |
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284 if a <literal>callback</literal> is not provided, |
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285 the <literal>Promise</literal> object |
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286 that resolves to the subrequest response object is returned. |
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287 </para> |
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288 </tag-desc> |
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289 |
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290 </list> |
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291 </para> |
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292 |
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293 </section> |
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294 |
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295 |
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296 <section id="stream" name="Stream Session"> |
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297 |
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298 <para> |
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299 The stream session object is available only in the |
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300 <link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link> |
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301 module. |
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302 All string properties of the object are <link id="string">byte strings</link>. |
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303 </para> |
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304 |
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305 <para> |
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306 <list type="tag"> |
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307 |
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308 <tag-name id="s_allow"><literal>s.allow()</literal></tag-name> |
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309 <tag-desc> |
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310 successfully finalizes the phase handler |
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311 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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312 </tag-desc> |
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313 |
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314 <tag-name id="s_decline"><literal>s.decline()</literal></tag-name> |
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315 <tag-desc> |
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316 finalizes the phase handler and passes control to the next handler |
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317 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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318 </tag-desc> |
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319 |
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320 <tag-name id="s_deny"><literal>s.deny()</literal></tag-name> |
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321 <tag-desc> |
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322 finalizes the phase handler with the access error code |
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323 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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324 </tag-desc> |
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325 |
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326 <tag-name id="s_done"><literal>s.done</literal>(<value>[code]</value>)</tag-name> |
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327 <tag-desc> |
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328 successfully finalizes the current phase handler |
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329 or finalizes it with the specified numeric code |
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330 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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331 </tag-desc> |
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332 |
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333 <tag-name><literal>s.error(<value>string</value>)</literal></tag-name> |
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334 <tag-desc> |
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335 writes a sent <literal>string</literal> to the error log |
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336 on the <literal>error</literal> level of logging |
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337 </tag-desc> |
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338 |
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339 <tag-name><literal>s.log(<value>string</value>)</literal></tag-name> |
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340 <tag-desc> |
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341 writes a sent <value>string</value> to the error log |
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342 on the <literal>info</literal> level of logging |
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343 </tag-desc> |
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344 |
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345 <tag-name id="s_off"><literal>s.off(<value>eventName</value>)</literal></tag-name> |
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346 <tag-desc> |
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347 unregisters the callback set by the <link id="s_on">s.on()</link> method |
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348 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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349 </tag-desc> |
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350 |
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351 <tag-name id="s_on"><literal>s.on(<value>event</value>, |
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352 <value>callback</value>)</literal></tag-name> |
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353 <tag-desc> |
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354 registers a <literal>callback</literal> for the specified <literal>event</literal> |
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355 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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356 |
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357 <para> |
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358 An <literal>event</literal> may be one of the following strings: |
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359 <list type="tag"> |
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360 <tag-name><literal>upload</literal></tag-name> |
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361 <tag-desc> |
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362 new data from a client |
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363 </tag-desc> |
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364 |
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365 <tag-name><literal>download</literal></tag-name> |
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366 <tag-desc> |
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367 new data to a client |
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368 </tag-desc> |
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369 |
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370 </list> |
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371 </para> |
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372 |
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373 <para> |
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374 The completion callback has the following prototype: |
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375 <literal>callback(data, flags)</literal>, where |
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376 <literal>data</literal> is string, |
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377 <literal>flags</literal> is an object |
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378 with the following properties: |
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379 <list type="tag"> |
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380 <tag-name id="s_on_callback_last"><literal>last</literal></tag-name> |
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381 <tag-desc> |
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382 a boolean value, true if data is a last buffer. |
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383 </tag-desc> |
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384 |
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385 </list> |
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386 </para> |
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387 </tag-desc> |
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388 |
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389 <tag-name><literal>s.remoteAddress</literal></tag-name> |
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390 <tag-desc> |
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391 client address, read-only |
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392 </tag-desc> |
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393 |
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394 <tag-name id="s_send"><literal>s.send(<value>data</value>[, |
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395 <value>options</value>])</literal></tag-name> |
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396 <tag-desc> |
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397 sends the data to the client |
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398 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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399 The <literal>options</literal> is an object used |
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400 to override nginx buffer flags derived from an incoming data chunk buffer. |
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401 The flags can be overriden with the following flags: |
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402 <para> |
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403 <list type="tag"> |
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404 |
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405 <tag-name><literal>last</literal></tag-name> |
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406 <tag-desc> |
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407 boolean, true if the buffer is the last buffer |
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408 </tag-desc> |
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409 |
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410 <tag-name><literal>flush</literal></tag-name> |
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411 <tag-desc> |
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412 boolean, true if the buffer should have the <literal>flush</literal> flag |
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413 </tag-desc> |
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414 </list> |
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415 </para> |
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416 The method can be called multiple times per callback invocation. |
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417 </tag-desc> |
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418 |
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419 <tag-name id="s_variables"><literal>s.variables{}</literal></tag-name> |
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420 <tag-desc> |
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Documented that r.variables{} and s.variables{} are writable.
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421 nginx variables object, writable |
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Documented that r.variables{} and s.variables{} are writable.
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422 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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423 </tag-desc> |
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424 |
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425 <tag-name><literal>s.warn(<value>string</value>)</literal></tag-name> |
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426 <tag-desc> |
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427 writes a sent <literal>string</literal> to the error log |
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428 on the <literal>warning</literal> level of logging |
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429 </tag-desc> |
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430 |
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431 </list> |
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432 </para> |
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433 |
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434 </section> |
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435 |
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436 </section> |
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437 |
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438 |
2176 | 439 <section id="core" name="Core"> |
440 | |
441 | |
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442 <section id="core_global" name="Global"> |
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Documented the "process" global object.
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443 |
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444 |
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445 <section id="process" name="Process"> |
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Documented the "process" global object.
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446 |
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Documented the "process" global object.
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447 <para> |
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448 The <literal>process</literal> object is a global object |
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449 that provides information about the current process |
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450 (<link doc="changes.xml" id="njs0.3.3">0.3.3</link>). |
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451 </para> |
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452 |
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Documented the "process" global object.
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453 |
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454 <para> |
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455 <list type="tag"> |
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456 |
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457 <tag-name id="process_argv"><literal>process.argv</literal></tag-name> |
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458 <tag-desc> |
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459 Returns an array that contains the command line arguments |
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460 passed when the current process was launched. |
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461 </tag-desc> |
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462 |
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|
463 <tag-name id="process_env"><literal>process.env</literal></tag-name> |
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464 <tag-desc> |
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465 Returns an object containing the user environment. |
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|
466 <note> |
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467 By default, nginx removes all environment variables inherited |
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468 from its parent process except the TZ variable. |
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469 Use the <link doc="../ngx_core_module.xml" id="env"/> directive |
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470 to preserve some of the inherited variables. |
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|
471 </note> |
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|
472 </tag-desc> |
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|
473 |
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|
474 <tag-name id="process_pid"><literal>process.pid</literal></tag-name> |
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|
475 <tag-desc> |
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476 Returns the PID of the current process. |
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477 </tag-desc> |
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|
478 |
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479 <tag-name id="process_ppid"><literal>process.ppid</literal></tag-name> |
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480 <tag-desc> |
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481 Returns the PID of the current parent process. |
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482 </tag-desc> |
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483 |
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|
484 </list> |
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485 </para> |
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|
486 |
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|
487 </section> |
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|
488 |
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489 </section> |
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|
490 |
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|
491 |
2312 | 492 <section id="core_object" name="Object"> |
493 | |
494 <para> | |
495 The <literal>Object</literal> constructor corresponds to a standard JS object. | |
496 <list type="tag"> | |
497 | |
498 <tag-name id="object_entries"><literal>Object.entries(<value>object</value>)</literal></tag-name> | |
499 <tag-desc> | |
500 returns an array of all enumerable property | |
501 <literal>[key, value]</literal> pairs | |
502 of the given <literal>object</literal> | |
503 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
504 </tag-desc> | |
505 | |
506 <tag-name id="object_values"><literal>Object.values(<value>object</value>)</literal></tag-name> | |
507 <tag-desc> | |
508 returns an array of all enumerable property values | |
509 of the given <literal>object</literal> | |
510 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
511 </tag-desc> | |
512 | |
513 </list> | |
514 </para> | |
515 | |
516 </section> | |
517 | |
518 | |
2186
8e2b3aadc3ce
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519 <section id="string" name="String"> |
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|
520 |
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|
521 <para> |
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diff
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|
522 There are two types of strings in njs: a Unicode string (default) and |
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523 a byte string. |
2186
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524 </para> |
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|
525 |
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|
526 <para> |
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|
527 A Unicode string corresponds to an ECMAScript string |
2186
8e2b3aadc3ce
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528 which contains Unicode characters. |
8e2b3aadc3ce
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|
529 </para> |
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changeset
|
530 |
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diff
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|
531 <para> |
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parents:
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|
532 Byte strings contain a sequence of bytes |
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parents:
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|
533 and are used to serialize Unicode strings |
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534 to external data and deserialize from external sources. |
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535 For example, the <link id="string_toutf8">toUTF8()</link> method serializes |
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536 a Unicode string to a byte string using UTF8 encoding: |
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|
537 <example> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
538 >> '£'.toUTF8().toString('hex') |
2214
e029f4bc7ede
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|
539 'c2a3' /* C2 A3 is the UTF8 representation of 00A3 ('£') code point */ |
2186
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diff
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|
540 </example> |
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parents:
2183
diff
changeset
|
541 The <link id="string_tobytes">toBytes()</link> method serializes |
8e2b3aadc3ce
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|
542 a Unicode string with code points up to 255 into a byte string, |
8e2b3aadc3ce
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parents:
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diff
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|
543 otherwise, <literal>null</literal> is returned: |
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diff
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|
544 <example> |
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parents:
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diff
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|
545 >> '£'.toBytes().toString('hex') |
2214
e029f4bc7ede
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|
546 'a3' /* a3 is a byte equal to 00A3 ('£') code point */ |
2186
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|
547 </example> |
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diff
changeset
|
548 Only byte strings can be converted to different encodings. |
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parents:
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diff
changeset
|
549 For example, a string cannot be encoded to <literal>hex</literal> directly: |
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Added njs String object.
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diff
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|
550 <example> |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
551 >> 'αβγδ'.toString('base64') |
8e2b3aadc3ce
Added njs String object.
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diff
changeset
|
552 TypeError: argument must be a byte string |
8e2b3aadc3ce
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diff
changeset
|
553 at String.prototype.toString (native) |
8e2b3aadc3ce
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parents:
2183
diff
changeset
|
554 at main (native) |
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parents:
2183
diff
changeset
|
555 </example> |
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Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
556 To convert a Unicode string to hex, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
557 first, it should be converted to a byte string and then to hex: |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
558 <example> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
559 >> 'αβγδ'.toUTF8().toString('base64') |
2214
e029f4bc7ede
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parents:
2212
diff
changeset
|
560 'zrHOss6zzrQ=' |
2186
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2183
diff
changeset
|
561 </example> |
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Added njs String object.
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parents:
2183
diff
changeset
|
562 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
563 <list type="tag"> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
564 |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
565 <tag-name id="string_bytesfrom"><literal>String.bytesFrom(<value>array</value> |
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Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
566 | <value>string</value>, <value>encoding</value>)</literal></tag-name> |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
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diff
changeset
|
567 <tag-desc> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
568 (njs specific) Creates a byte string either from an array that contains octets, |
2315
ae56e4613280
Corrected language in njs.
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parents:
2313
diff
changeset
|
569 or from an encoded string |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2332
diff
changeset
|
570 (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
571 The encoding can be |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
572 <literal>hex</literal>, |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
573 <literal>base64</literal>, and |
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Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
574 <literal>base64url</literal>. |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
575 <example> |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
576 >> String.bytesFrom([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]) |
660229c5c92f
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parents:
2207
diff
changeset
|
577 'buffer' |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
578 |
660229c5c92f
Documented String.bytesFrom() method in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
579 >> String.bytesFrom('YnVmZmVy', 'base64') |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
580 'buffer' |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
581 </example> |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
2207
diff
changeset
|
582 </tag-desc> |
660229c5c92f
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
2207
diff
changeset
|
583 |
2271
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
584 <tag-name id="string_fromcharcode"><literal>String.fromCharCode(<value>CharCode1</value>[, ...[, |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
585 <value>CharCodeN</value>]])</literal></tag-name> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
586 <tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
587 Returns a string from one or more Unicode code points. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
588 <example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
589 >> String.fromCharCode(97, 98, 99, 100) |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
590 'abcd' |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
591 </example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
592 </tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
593 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
594 <tag-name id="string_fromcodepoint"><literal>String.fromCodePoint(<value>codePoint1</value>[, ...[, |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
595 <value>codePoint2</value>]])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
596 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
597 Returns a string from one or more Unicode code points. |
8e2b3aadc3ce
Added njs String object.
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598 <example> |
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599 >> String.fromCodePoint(97, 98, 99, 100) |
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parents:
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|
600 'abcd' |
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601 </example> |
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|
602 </tag-desc> |
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|
603 |
2271
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Described charAt, codePointAt, fromCharCode in njs.
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604 <tag-name id="string_charat"><literal>String.prototype.charAt(<value>index</value>)</literal></tag-name> |
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Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
605 <tag-desc> |
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Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
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|
606 Returns a string representing one Unicode code unit |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
607 at the specified <literal>index</literal>; |
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Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
608 empty string if index is out of range. |
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Corrected language in njs.
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parents:
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|
609 The index can be an integer |
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Described charAt, codePointAt, fromCharCode in njs.
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parents:
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changeset
|
610 between 0 and 1-less-than the length of the string. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
611 If no index is provided, the default is <literal>0</literal>, |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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changeset
|
612 so the first character in the string is returned. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
613 </tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
614 |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
615 <tag-name id="string_codepointat"><literal>String.prototype.CodePointAt(<value>position</value>)</literal></tag-name> |
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Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
616 <tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
617 Returns a number representing the code point value of the character |
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Corrected language in njs.
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parents:
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diff
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|
618 at the given <literal>position</literal>; |
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|
619 <literal>undefined</literal> if there is no element at position. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
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|
620 <example> |
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parents:
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|
621 >> 'ABCD'.codePointAt(3); |
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Described charAt, codePointAt, fromCharCode in njs.
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parents:
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|
622 68 |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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|
623 </example> |
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624 </tag-desc> |
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diff
changeset
|
625 |
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parents:
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|
626 <tag-name id="string_concat"><literal>String.prototype.concat(<value>string1</value>[, ..., |
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627 <value>stringN</value>])</literal></tag-name> |
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|
628 <tag-desc> |
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|
629 Returns a string that contains the concatenation of specified |
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630 <literal>strings</literal>. |
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|
631 <example> |
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|
632 >> "a".concat("b", "c") |
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|
633 'abc' |
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|
634 </example> |
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|
635 </tag-desc> |
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parents:
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|
636 |
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changeset
|
637 <tag-name id="string_endswith"><literal>String.prototype.endsWith(<value>searchString</value>[, |
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|
638 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
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|
639 <tag-desc> |
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changeset
|
640 Returns <literal>true</literal> if a string ends with the characters |
8e2b3aadc3ce
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641 of a specified string, otherwise <literal>false</literal>. |
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Added njs String object.
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|
642 The optional <literal>length</literal> parameter is the the length of string. |
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changeset
|
643 If omitted, the default value is the length of the string. |
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parents:
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|
644 <example> |
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parents:
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|
645 >> 'abc'.endsWith('abc') |
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Added njs String object.
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|
646 true |
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|
647 >> 'abca'.endsWith('abc') |
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|
648 false |
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Added njs String object.
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diff
changeset
|
649 </example> |
8e2b3aadc3ce
Added njs String object.
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|
650 </tag-desc> |
8e2b3aadc3ce
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|
651 |
2267
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diff
changeset
|
652 <tag-name id="string_frombytes"><literal>String.prototype.fromBytes(<value>start</value>[, |
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8e2b3aadc3ce
Added njs String object.
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653 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
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diff
changeset
|
654 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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changeset
|
655 (njs specific) Returns a new Unicode string from a byte string |
8e2b3aadc3ce
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parents:
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diff
changeset
|
656 where each byte is replaced with a corresponding Unicode code point. |
8e2b3aadc3ce
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|
657 </tag-desc> |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
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|
658 |
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|
659 <tag-name id="string_fromutf8"><literal>String.prototype.fromUTF8(<value>start</value>[, |
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parents:
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|
660 <value>end</value>])</literal></tag-name> |
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parents:
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|
661 <tag-desc> |
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|
662 (njs specific) Converts a byte string containing a valid UTF8 string |
8e2b3aadc3ce
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|
663 into a Unicode string, |
8e2b3aadc3ce
Added njs String object.
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|
664 otherwise <literal>null</literal> is returned. |
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diff
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|
665 </tag-desc> |
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parents:
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|
666 |
2267
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|
667 <tag-name id="string_includes"><literal>String.prototype.includes(<value>searchString</value>[, |
2186
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diff
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|
668 <value>position</value>]))</literal></tag-name> |
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|
669 <tag-desc> |
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|
670 Returns <literal>true</literal> if a string is found within another string, |
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671 otherwise <literal>false</literal>. |
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|
672 The optional <literal>position</literal> parameter is the position |
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diff
changeset
|
673 within the string at which to begin search for <literal>searchString</literal>. |
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|
674 Default value is 0. |
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|
675 <example> |
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|
676 >> 'abc'.includes('bc') |
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Added njs String object.
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|
677 true |
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|
678 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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|
679 </tag-desc> |
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Added njs String object.
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|
680 |
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|
681 <tag-name id="string_indexof"><literal>String.prototype.indexOf(<value>searchString</value>[, |
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|
682 <value>fromIndex</value>])</literal></tag-name> |
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|
683 <tag-desc> |
8e2b3aadc3ce
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diff
changeset
|
684 Returns the position of the first occurrence |
2315
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|
685 of the <literal>searchString</literal>. |
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|
686 The search is started at <literal>fromIndex</literal>. |
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|
687 Returns <value>-1</value> if the value is not found. |
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|
688 The <literal>fromIndex</literal> is an integer, |
8e2b3aadc3ce
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changeset
|
689 default value is 0. |
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changeset
|
690 If <literal>fromIndex</literal> is lower than 0 |
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Added njs String object.
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changeset
|
691 or greater than |
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Added njs String object.
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changeset
|
692 <link id="string_length">String.prototype.length</link><value></value>, |
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|
693 the search starts at index <value>0</value> and |
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changeset
|
694 <value>String.prototype.length</value>. |
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changeset
|
695 <example> |
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|
696 >> 'abcdef'.indexOf('de', 2) |
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|
697 3 |
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|
698 </example> |
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changeset
|
699 </tag-desc> |
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Added njs String object.
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changeset
|
700 |
2267
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changeset
|
701 <tag-name id="string_lastindexof"><literal>String.prototype.lastIndexOf(<value>searchString</value>[, |
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|
702 <value>fromIndex</value>])</literal></tag-name> |
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|
703 <tag-desc> |
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changeset
|
704 Returns the position of the last occurrence |
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changeset
|
705 of the <literal>searchString</literal>, |
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changeset
|
706 searching backwards from <literal>fromIndex</literal>. |
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changeset
|
707 Returns <value>-1</value> if the value is not found. |
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changeset
|
708 If <literal>searchString</literal> is empty, |
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changeset
|
709 then <literal>fromIndex</literal> is returned. |
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changeset
|
710 <example> |
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changeset
|
711 >> "nginx".lastIndexOf("gi") |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
712 1 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
713 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
714 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
715 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
716 <tag-name id="string_length"><literal>String.prototype.length</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
717 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
718 Returns the length of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
719 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
720 >> 'αβγδ'.length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
721 4 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
722 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
723 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
724 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
725 <tag-name id="string_match"><literal>String.prototype.match([<value>regexp</value>])</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
726 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
727 Matches a string against a <literal>regexp</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
728 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
729 >> 'nginx'.match( /ng/i ) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
730 'ng' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
731 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
732 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
733 |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
734 <tag-name id="string_padend"><literal>String.prototype.padEnd(<value>length</value> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
735 [, <value>string</value>])</literal></tag-name> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
736 <tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
737 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
738 with the pad <literal>string</literal> applied to the end of the specified |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2332
diff
changeset
|
739 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
740 <example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
741 >> '1234'.padEnd(8, 'abcd') |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
742 '1234abcd' |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
743 </example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
744 </tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
745 |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
746 <tag-name id="string_padstart"><literal>String.prototype.padStart(<value>length</value> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
747 [, <value>string</value>])</literal></tag-name> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
748 <tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
749 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
750 with the pad <literal>string</literal> applied to the start of the specified |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2332
diff
changeset
|
751 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
752 <example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
753 >> '1234'.padStart(8, 'abcd') |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
754 'abcd1234' |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
755 </example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
756 </tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
757 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
758 <tag-name id="string_repeat"><literal>String.prototype.repeat(<value>number</value>)</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
759 <tag-desc> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
760 Returns a string |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
761 with the specified <literal>number</literal> of copies of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
762 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
763 >> 'abc'.repeat(3) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
764 'abcabcabc' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
765 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
766 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
767 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
768 <tag-name id="string_replace"><literal>String.prototype.replace([<value>regexp</value>|<value>string</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
769 <value>string</value>|<value>function</value>]])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
770 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
771 Returns a new string with matches of a pattern |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
772 (<literal>string</literal> or a <literal>regexp</literal>) |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
773 replaced by a <literal>string</literal> or a <literal>function</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
774 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
775 >> 'abcdefgh'.replace('d', 1) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
776 'abc1efgh' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
777 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
778 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
779 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
780 <tag-name id="string_search"><literal>String.prototype.search([<value>regexp</value>])</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
781 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
782 Searches for a string using a <literal>regexp</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
783 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
784 >> 'abcdefgh'.search('def') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
785 3 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
786 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
787 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
788 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
789 <tag-name id="string_slice"><literal>String.prototype.slice(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
790 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
791 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
792 Returns a new string containing a part of an |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
793 original string between <literal>start</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
794 and <literal>end</literal> or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
795 from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
796 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
797 >> 'abcdefghijklmno'.slice(NaN, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
798 'abcde' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
799 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
800 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
801 |
2268
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
802 <tag-name id="string_split"><literal>String.prototype.split(([<value>string</value>|<value>regexp</value>[, |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
803 <value>limit</value>]]))</literal></tag-name> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
804 <tag-desc> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
805 Returns match of a string against a <literal>regexp</literal>. |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
806 The optional <literal>limit</literal> parameter is an integer that specifies |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
807 a limit on the number of splits to be found. |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
808 <example> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
809 >> 'abc'.split('') |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
810 [ |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
811 'a', |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
812 'b', |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
813 'c' |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
814 ] |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
815 </example> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
816 </tag-desc> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
817 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
818 <tag-name id="string_startswith"><literal>String.prototype.startsWith(<value>searchString</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
819 <value>position</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
820 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
821 Returns <literal>true</literal> if a string begins with the characters |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
822 of a specified string, otherwise <literal>false</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
823 The optional <literal>position</literal> parameter is the position |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
824 in this string at which to begin search for <literal>searchString</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
825 Default value is 0. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
826 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
827 >> 'abc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
828 true |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
829 > 'aabc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
830 false |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
831 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
832 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
833 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
834 <tag-name id="string_substr"><literal>String.prototype.substr(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
835 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
836 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
837 Returns the part of the string of the specified <literal>length</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
838 from <literal>start</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
839 or from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
840 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
841 >> 'abcdefghijklmno'.substr(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
842 'defgh' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
843 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
844 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
845 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
846 <tag-name id="string_substring"><literal>String.prototype.substring(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
847 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
848 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
849 Returns the part of the string between |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
850 <literal>start</literal> and <literal>end</literal> or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
851 from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
852 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
853 >> 'abcdefghijklmno'.substring(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
854 'de' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
855 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
856 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
857 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
858 <tag-name id="string_tobytes"><literal>String.prototype.toBytes(start[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
859 end])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
860 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
861 (njs specific) Serializes a Unicode string to a byte string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
862 Returns <literal>null</literal> if a character larger than 255 is |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
863 found in the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
864 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
865 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
866 <tag-name id="string_tolowercase"><literal>String.prototype.toLowerCase()</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
867 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
868 Converts a string to lower case. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
869 The method supports only simple Unicode folding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
870 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
871 >> 'ΑΒΓΔ'.toLowerCase() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
872 'αβγδ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
873 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
874 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
875 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
876 <tag-name><literal>String.prototype.toString([<value>encoding</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
877 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
878 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
879 If no <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
880 returns a specified Unicode string or byte string as in ECMAScript. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
881 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
882 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
883 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
884 (njs specific) If <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
885 encodes a <link id="string_tobytes">byte string</link> to |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
886 <literal>hex</literal>, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
887 <literal>base64</literal>, or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
888 <literal>base64url</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
889 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
890 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
891 >> 'αβγδ'.toUTF8().toString('base64url') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
892 'zrHOss6zzrQ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
893 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
894 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
895 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
896 <tag-name id="string_touppercase"><literal>String.prototype.toUpperCase()</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
897 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
898 Converts a string to upper case. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
899 The method supports only simple Unicode folding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
900 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
901 >> 'αβγδ'.toUpperCase() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
902 'ΑΒΓΔ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
903 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
904 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
905 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
906 <tag-name id="string_toutf8"><literal>String.prototype.toUTF8(<value>start</value>[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
907 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
908 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
909 (njs specific) Serializes a Unicode string |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
910 to a byte string using UTF8 encoding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
911 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
912 >> 'αβγδ'.toUTF8().length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
913 8 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
914 >> 'αβγδ'.length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
915 4 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
916 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
917 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
918 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
919 <tag-name id="string_trim"><literal>String.prototype.trim()</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
920 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
921 Removes whitespaces from both ends of a string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
922 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
923 >> ' abc '.trim() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
924 'abc' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
925 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
926 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
927 |
2414 | 928 <tag-name id="string_trimend"><literal>String.prototype.trimEnd()</literal></tag-name> |
929 <tag-desc> | |
930 Removes whitespaces from the end of a string | |
931 (<link doc="changes.xml" id="njs0.3.4">0.3.4</link>). | |
932 <example> | |
933 >> ' abc '.trimEnd() | |
934 ' abc' | |
935 </example> | |
936 </tag-desc> | |
937 | |
938 <tag-name id="string_trimstart"><literal>String.prototype.trimStart()</literal></tag-name> | |
939 <tag-desc> | |
940 Removes whitespaces from the beginning of a string | |
941 (<link doc="changes.xml" id="njs0.3.4">0.3.4</link>). | |
942 <example> | |
943 >> ' abc '.trimStart() | |
944 'abc ' | |
945 </example> | |
946 </tag-desc> | |
947 | |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
948 <tag-name id="encodeuri"><literal>encodeURI(<value>URI</value>)</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
949 <tag-desc> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
950 Encodes a URI by replacing each instance of certain characters |
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
951 by one, two, three, or four escape sequences |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
952 representing the UTF-8 encoding of the character |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
953 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
954 >> encodeURI('012αβγδ') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
955 '012%CE%B1%CE%B2%CE%B3%CE%B4' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
956 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
957 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
958 |
2267
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959 <tag-name id="encodeuricomponent"><literal>encodeURIComponent(<value>encodedURIString</value>)</literal></tag-name> |
2186
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960 <tag-desc> |
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961 Encodes a URI by replacing each instance of certain characters |
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962 by one, two, three, or four escape sequences |
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963 representing the UTF-8 encoding of the character. |
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964 <example> |
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965 >> encodeURIComponent('[@?=') |
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966 '%5B%40%3F%3D' |
2186
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967 </example> |
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968 </tag-desc> |
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969 |
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970 <tag-name id="decodeuri"><literal>decodeURI(<value>encodedURI</value>)</literal></tag-name> |
2186
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971 <tag-desc> |
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972 Decodes a previously <link id="encodeuri">encoded</link> URI. |
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973 <example> |
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974 >> decodeURI('012%CE%B1%CE%B2%CE%B3%CE%B4') |
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975 '012αβγδ' |
2186
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976 </example> |
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977 </tag-desc> |
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978 |
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979 <tag-name id="decodeuricomponent"><literal>decodeURIComponent(<value>decodedURIString</value>)</literal></tag-name> |
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980 <tag-desc> |
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981 Decodes an encoded component of a previously encoded URI. |
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982 <example> |
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983 >> decodeURIComponent('%5B%40%3F%3D') |
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984 '[@?=' |
2186
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985 </example> |
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986 </tag-desc> |
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987 |
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988 </list> |
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989 </para> |
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990 |
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991 </section> |
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992 |
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993 |
2176 | 994 <section id="core_json" name="JSON"> |
995 | |
996 <para> | |
997 The <literal>JSON</literal> object (ES 5.1) provides functions | |
998 to convert njs values to and from JSON format. | |
999 <list type="tag"> | |
1000 | |
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1001 <tag-name id="core_json_parse"><literal>JSON.parse(<value>string</value>[, |
2176 | 1002 <value>reviver</value>])</literal></tag-name> |
1003 <tag-desc> | |
1004 Converts a <literal>string</literal> that represents JSON data | |
1005 into an njs object (<literal>{...}</literal>) or | |
1006 array (<literal>[...]</literal>). | |
1007 The optional <literal>reviver</literal> parameter is a function (key, value) | |
1008 that will be called for each (key,value) pair and can transform the value. | |
1009 </tag-desc> | |
1010 | |
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1011 <tag-name id="core_json_stringify"><literal>JSON.stringify(<value>value</value>[, |
2176 | 1012 <value>replacer</value>] [, <value>space</value>])</literal></tag-name> |
1013 <tag-desc> | |
1014 Converts an njs object back to JSON. | |
1015 The obligatory <literal>value</literal> parameter is generally a JSON | |
1016 <literal>object</literal> or <literal>array</literal> that will be converted. | |
1017 If the value has a <literal>toJSON()</literal> method, | |
1018 it defines how the object will be serialized. | |
1019 The optional <literal>replacer</literal> parameter is | |
1020 a <literal>function</literal> or <literal>array</literal> | |
1021 that transforms results. | |
1022 The optional <literal>space</literal> parameter is | |
1023 a <literal>string</literal> or <literal>number</literal>. | |
1024 If it is a <literal>number</literal>, | |
1025 it indicates the number of white spaces placed before a result | |
1026 (no more than 10). | |
1027 If it is a <literal>string</literal>, | |
1028 it is used as a white space (or first 10 characters of it). | |
1029 If omitted or is <literal>null</literal>, no white space is used. | |
1030 </tag-desc> | |
1031 </list> | |
1032 </para> | |
1033 | |
1034 <para> | |
1035 <example> | |
1036 >> var json = JSON.parse('{"a":1, "b":true}') | |
1037 >> json.a | |
1038 1 | |
1039 | |
1040 >> JSON.stringify(json) | |
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1041 '{"a":1,"b":true}' |
2176 | 1042 |
1043 >> JSON.stringify({ x: [10, undefined, function(){}] }) | |
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1044 '{"x":[10,null,null]}' |
2176 | 1045 |
1046 >> JSON.stringify({"a":1, "toJSON": function() {return "xxx"}}) | |
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1047 '"xxx"' |
2176 | 1048 |
1049 # Example with function replacer | |
1050 | |
1051 >> function replacer(key, value) {return (typeof value === 'string') ? undefined : value} | |
1052 >>JSON.stringify({a:1, b:"b", c:true}, replacer) | |
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1053 '{"a":1,"c":true}' |
2176 | 1054 </example> |
1055 </para> | |
1056 | |
1057 </section> | |
1058 | |
2177 | 1059 |
1060 <section id="crypto" name="Crypto"> | |
1061 | |
1062 <para> | |
1063 The Crypto module provides cryptographic functionality support. | |
1064 The Crypto module object is returned by <literal>require('crypto')</literal>. | |
1065 </para> | |
1066 | |
1067 <para> | |
1068 <list type="tag"> | |
1069 | |
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1070 <tag-name id="crypto_createhash"><literal>crypto.createHash(<value>algorithm</value>)</literal></tag-name> |
2177 | 1071 <tag-desc> |
1072 Creates and returns a <link id="crypto_hash">Hash</link> object | |
1073 that can be used to generate hash digests | |
1074 using the given <value>algorithm</value>. | |
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1075 The algorithm can be |
2177 | 1076 <literal>md5</literal>, |
1077 <literal>sha1</literal>, and | |
1078 <literal>sha256</literal>. | |
1079 </tag-desc> | |
1080 | |
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1081 <tag-name id="crypto_createhmac"><literal>crypto.createHmac(<value>algorithm</value>, |
2177 | 1082 <value>secret key</value>)</literal></tag-name> |
1083 <tag-desc> | |
1084 Creates and returns an <link id="crypto_hmac">HMAC</link> object | |
1085 that uses the given <value>algorithm</value> and <value>secret key</value>. | |
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1086 The algorithm can be |
2177 | 1087 <literal>md5</literal>, |
1088 <literal>sha1</literal>, and | |
1089 <literal>sha256</literal>. | |
1090 </tag-desc> | |
1091 | |
1092 </list> | |
1093 </para> | |
1094 | |
1095 | |
1096 <section id="crypto_hash" name="Hash"> | |
1097 | |
1098 <para> | |
1099 <list type="tag"> | |
1100 | |
1101 <tag-name><literal>hash.update(<value>data</value>)</literal></tag-name> | |
1102 <tag-desc> | |
1103 Updates the hash content with the given <value>data</value>. | |
1104 </tag-desc> | |
1105 | |
1106 <tag-name><literal>hash.digest([<value>encoding</value>])</literal></tag-name> | |
1107 <tag-desc> | |
1108 Calculates the digest of all of the data passed using | |
1109 <literal>hash.update()</literal>. | |
1110 The encoding can be | |
1111 <literal>hex</literal>, | |
1112 <literal>base64</literal>, and | |
1113 <literal>base64url</literal>. | |
1114 If encoding is not provided, a byte string is returned. | |
1115 </tag-desc> | |
1116 | |
1117 </list> | |
1118 </para> | |
1119 | |
1120 <para> | |
1121 <example> | |
1122 >> var cr = require('crypto') | |
1123 undefined | |
1124 | |
1125 >> cr.createHash('sha1').update('A').update('B').digest('base64url') | |
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1126 'BtlFlCqiamG-GMPiK_GbvKjdK10' |
2177 | 1127 </example> |
1128 </para> | |
1129 | |
1130 </section> | |
1131 | |
1132 | |
1133 <section id="crypto_hmac" name="HMAC"> | |
1134 | |
1135 <para> | |
1136 <list type="tag"> | |
1137 | |
1138 <tag-name><literal>hmac.update(<value>data</value>)</literal></tag-name> | |
1139 <tag-desc> | |
1140 Updates the HMAC content with the given <value>data</value>. | |
1141 </tag-desc> | |
1142 | |
1143 <tag-name><literal>hmac.digest([<value>encoding</value>])</literal></tag-name> | |
1144 <tag-desc> | |
1145 Calculates the HMAC digest of all of the data passed using | |
1146 <literal>hmac.update()</literal>. | |
1147 The encoding can be | |
1148 <literal>hex</literal>, | |
1149 <literal>base64</literal>, and | |
1150 <literal>base64url</literal>. | |
1151 If encoding is not provided, a byte string is returned. | |
1152 </tag-desc> | |
1153 </list> | |
1154 </para> | |
1155 | |
1156 <para> | |
1157 <example> | |
1158 >> var cr = require('crypto') | |
1159 undefined | |
1160 | |
1161 >> cr.createHmac('sha1', 'secret.key').update('AB').digest('base64url') | |
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1162 'Oglm93xn23_MkiaEq_e9u8zk374' |
2177 | 1163 </example> |
1164 </para> | |
1165 | |
1166 </section> | |
1167 | |
1168 </section> | |
1169 | |
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1170 <section id="njs_api_timers" name="Timers"> |
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1171 |
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1172 <para> |
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1173 |
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1174 <list type="tag"> |
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1175 |
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1176 <tag-name id="cleartimeout"><literal>clearTimeout(<value>timeout</value>)</literal></tag-name> |
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1177 <tag-desc> |
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1178 Cancels a <literal>timeout</literal> object |
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1179 created by <link id="settimeout">setTimeout()</link>. |
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1180 </tag-desc> |
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1181 |
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1182 <tag-name id="settimeout"><literal>setTimeout(<value>function</value>, |
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1183 <value>ms</value>[, <value>arg1</value>, <value>argN</value>])</literal></tag-name> |
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1184 <tag-desc> |
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1185 Calls a <literal>function</literal> |
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1186 after a specified number of <literal>milliseconds</literal>. |
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1187 One or more optional <literal>arguments</literal> |
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1188 can be passed to the specified function. |
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1189 Returns a <literal>timeout</literal> object. |
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1190 <example> |
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1191 function handler(v) |
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1192 { |
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1193 // ... |
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1194 } |
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1195 |
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1196 t = setTimeout(handler, 12); |
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1197 |
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1198 // ... |
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1199 |
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1200 clearTimeout(t); |
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1201 </example> |
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1202 </tag-desc> |
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1203 |
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1204 </list> |
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1205 </para> |
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1206 |
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1207 </section> |
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1208 |
2204
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1209 |
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|
1210 <section id="njs_api_fs" name="File System"> |
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1211 |
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|
1212 <para> |
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1213 The File System module provides operations with files. |
2507 | 1214 </para> |
1215 | |
1216 <para> | |
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1217 The module object is returned by <literal>require('fs')</literal>. |
2508
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1218 Since <link doc="changes.xml" id="njs0.3.9">0.3.9</link>, |
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|
1219 promissified versions of file system methods are available through |
2507 | 1220 <literal>require('fs').promises</literal> object: |
1221 <example> | |
1222 > var fs = require('fs').promises; | |
1223 undefined | |
1224 > fs.readFile("/file/path").then((data)=>console.log(data)) | |
1225 <file data> | |
1226 </example> | |
2204
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1227 <list type="tag"> |
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1228 |
2507 | 1229 <tag-name id="fs_accesssync"><literal>accessSync(<value>path</value>[, |
1230 <value>mode</value>])</literal></tag-name> | |
1231 <tag-desc> | |
1232 Synchronously tests permissions for a file or directory | |
1233 specified in the <literal>path</literal> | |
1234 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
1235 If the check fails, an error will be returned, | |
1236 otherwise, the method will return undefined. | |
1237 <list type="tag"> | |
1238 | |
1239 <tag-name><literal>mode</literal></tag-name> | |
1240 <tag-desc> | |
1241 by default is <link id="access_const"><literal>fs.constants.F_OK</literal></link>. | |
1242 The mode argument is an optional integer | |
1243 that specifies the accessibility checks to be performed. | |
1244 <example> | |
1245 try { | |
1246 fs.accessSync('/file/path', fs.constants.R_OK | fs.constants.W_OK); | |
1247 console.log('has access'); | |
1248 } catch (e) { | |
1249 console.log('no access');) | |
1250 } | |
1251 </example> | |
1252 </tag-desc> | |
1253 | |
1254 </list> | |
1255 </tag-desc> | |
1256 | |
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1257 <tag-name id="appendfilesync"><literal>appendFileSync(<value>filename</value>, |
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1258 <value>data</value>[, <value>options</value>])</literal></tag-name> |
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1259 <tag-desc> |
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1260 Synchronously appends specified <literal>data</literal> |
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1261 to a file with provided <literal>filename</literal>. |
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1262 If the file does not exist, it will be created. |
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1263 The <literal>options</literal> parameter is expected to be |
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|
1264 an object with the following keys: |
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1265 <list type="tag"> |
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1266 |
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1267 <tag-name><literal>mode</literal></tag-name> |
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1268 <tag-desc> |
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1269 mode option, by default is <literal>0o666</literal> |
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1270 </tag-desc> |
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1271 |
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1272 <tag-name><literal>flag</literal></tag-name> |
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1273 <tag-desc> |
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1274 file system <link id="njs_api_fs_flags">flag</link>, |
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1275 by default is <literal>a</literal> |
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1276 </tag-desc> |
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1277 |
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1278 </list> |
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1279 </tag-desc> |
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1280 |
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|
1281 <tag-name id="readfilesync"><literal>readFileSync(<value>filename</value>[, |
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|
1282 <value>options</value>])</literal></tag-name> |
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1283 <tag-desc> |
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1284 Synchronously returns the contents of the file |
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1285 with provided <literal>filename</literal>. |
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1286 The <literal>options</literal> parameter holds |
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|
1287 <literal>string</literal> that specifies encoding. |
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1288 If not specified, a <link id="string_tobytes">byte string</link> is returned. |
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1289 If <literal>utf8</literal> encoding is specified, a Unicode string is returned. |
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1290 Otherwise, <literal>options</literal> is expected to be |
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|
1291 an object with the following keys: |
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|
1292 <list type="tag"> |
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|
1293 |
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|
1294 <tag-name><literal>encoding</literal></tag-name> |
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1295 <tag-desc> |
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1296 encoding, by default is not specified. |
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1297 The encoding can be <literal>utf8</literal> |
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1298 </tag-desc> |
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1299 |
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1300 <tag-name><literal>flag</literal></tag-name> |
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1301 <tag-desc> |
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1302 file system <link id="njs_api_fs_flags">flag</link>, |
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1303 by default is <literal>r</literal> |
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1304 </tag-desc> |
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1305 |
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|
1306 </list> |
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1307 <example> |
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1308 >> var fs = require('fs') |
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1309 undefined |
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|
1310 >> var file = fs.readFileSync('/file/path.tar.gz') |
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|
1311 undefined |
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|
1312 >> var gzipped = /^\x1f\x8b/.test(file); gzipped |
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|
1313 true |
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|
1314 </example> |
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1315 </tag-desc> |
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1316 |
2507 | 1317 <tag-name id="fs_realpathsync"><literal>realpathSync(<value>path</value>[, |
1318 <value>options</value>])</literal></tag-name> | |
1319 <tag-desc> | |
1320 Synchronously computes the canonical pathname by resolving | |
1321 <literal>.</literal>, <literal>..</literal> and symbolic links using | |
2508
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1322 <link url="http://man7.org/linux/man-pages/man3/realpath.3.html">realpath(3)</link>. |
2507 | 1323 The <literal>options</literal> argument can be a string specifying an encoding, |
1324 or an object with an encoding property specifying the character encoding | |
1325 to use for the path passed to the callback | |
1326 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). | |
1327 </tag-desc> | |
1328 | |
2509
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1329 <tag-name id="fs_renamesync"><literal>renameSync(<value>oldPath</value>, |
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1330 <value>newPath</value>)</literal></tag-name> |
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1331 <tag-desc> |
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1332 Synchronously changes the name or location of a file from |
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1333 <literal>oldPath</literal> to <literal>newPath</literal> |
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1334 (<link doc="changes.xml" id="njs0.3.4">0.3.4</link>). |
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1335 <example> |
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1336 >> var fs = require('fs') |
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1337 undefined |
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1338 >> var file = fs.renameSync('hello.txt', 'HelloWorld.txt') |
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1339 undefined |
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1340 </example> |
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1341 </tag-desc> |
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1342 |
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1343 <tag-name id="fs_symlinksync"><literal>symlinkSync(<value>target</value>, |
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1344 <value>path</value>)</literal></tag-name> |
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1345 <tag-desc> |
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1346 Synchronously creates the link called <literal>path</literal> |
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1347 pointing to <literal>target</literal> using |
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1348 <link url="http://man7.org/linux/man-pages/man2/symlink.2.html">symlink(2)</link> |
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1349 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
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1350 Relative targets are relative to the link’s parent directory. |
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1351 </tag-desc> |
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1352 |
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1353 <tag-name id="fs_unlinksync"><literal>unlinkSync(<value>path</value>)</literal></tag-name> |
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1354 <tag-desc> |
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1355 Synchronously unlinks a file by <literal>path</literal> |
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1356 (<link doc="changes.xml" id="njs0.3.9">0.3.9</link>). |
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|
1357 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1358 |
2204
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1359 <tag-name id="writefilesync"><literal>writeFileSync(<value>filename</value>, |
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|
1360 <value>data</value>[, |
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1361 <value>options</value>])</literal></tag-name> |
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1362 <tag-desc> |
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|
1363 Synchronously writes <literal>data</literal> to a file |
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|
1364 with provided <literal>filename</literal>. |
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|
1365 If the file does not exist, it will be created, |
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|
1366 if the file exists, it will be replaced. |
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|
1367 The <literal>options</literal> parameter is expected to be |
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|
1368 an object with the following keys: |
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|
1369 <list type="tag"> |
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|
1370 <tag-name><literal>mode</literal></tag-name> |
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|
1371 <tag-desc> |
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|
1372 mode option, by default is <literal>0o666</literal> |
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|
1373 </tag-desc> |
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|
1374 |
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|
1375 <tag-name><literal>flag</literal></tag-name> |
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|
1376 <tag-desc> |
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|
1377 file system <link id="njs_api_fs_flags">flag</link>, |
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Documented fileSystem methods in njs.
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|
1378 by default is <literal>w</literal> |
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|
1379 </tag-desc> |
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|
1380 |
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|
1381 </list> |
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|
1382 <example> |
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Documented fileSystem methods in njs.
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|
1383 >> var fs = require('fs') |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1384 undefined |
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diff
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|
1385 >> var file = fs.writeFileSync('hello.txt', 'Hello world') |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1386 undefined |
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Documented fileSystem methods in njs.
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diff
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|
1387 </example> |
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Documented fileSystem methods in njs.
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|
1388 </tag-desc> |
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|
1389 |
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|
1390 </list> |
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|
1391 </para> |
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|
1392 |
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|
1393 |
2507 | 1394 <section id="access_const" name="File Access Constants"> |
1395 | |
1396 <para> | |
1397 The <link id="fs_accesssync"><literal>access()</literal></link> method | |
1398 can accept the following flags. | |
1399 These flags are exported by <literal>fs.constants</literal>: | |
1400 | |
1401 <list type= "bullet" compact="no"> | |
1402 | |
1403 <listitem> | |
1404 <literal>F_OK</literal>—indicates that the file | |
1405 is visible to the calling process, | |
1406 used by default if no mode is specified | |
1407 </listitem> | |
1408 | |
1409 <listitem> | |
1410 <literal>R_OK</literal>—indicates that the file can be | |
1411 read by the calling process | |
1412 </listitem> | |
1413 | |
1414 <listitem> | |
1415 <literal>W_OK</literal>—indicates that the file can be | |
1416 written by the calling process | |
1417 </listitem> | |
1418 | |
1419 <listitem> | |
1420 <literal>X_OK</literal>—indicates that the file can be | |
1421 executed by the calling process | |
1422 </listitem> | |
1423 | |
1424 </list> | |
1425 </para> | |
1426 | |
1427 </section> | |
1428 | |
1429 | |
2204
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Documented fileSystem methods in njs.
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|
1430 <section id="njs_api_fs_flags" name="File System Flags"> |
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|
1431 |
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|
1432 <para> |
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Documented fileSystem methods in njs.
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|
1433 The <literal>flag</literal> option can accept the following values: |
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|
1434 |
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|
1435 <list type= "bullet" compact="no"> |
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|
1436 |
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|
1437 <listitem> |
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|
1438 <literal>a</literal>—open a file for appending. |
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|
1439 The file is created if it does not exist |
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|
1440 </listitem> |
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|
1441 |
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|
1442 <listitem> |
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|
1443 <literal>ax</literal>—the same as <literal>a</literal> |
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|
1444 but fails if the file already exists |
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|
1445 </listitem> |
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|
1446 |
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|
1447 <listitem> |
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|
1448 <literal>a+</literal>—open a file for reading and appending. |
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|
1449 If the file does not exist, it will be created |
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|
1450 </listitem> |
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|
1451 |
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|
1452 <listitem> |
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Documented fileSystem methods in njs.
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|
1453 <literal>ax+</literal>—the same as <literal>a+</literal> |
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|
1454 but fails if the file already exists |
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Documented fileSystem methods in njs.
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|
1455 </listitem> |
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Documented fileSystem methods in njs.
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|
1456 |
001f2d905fd9
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|
1457 <listitem> |
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|
1458 <literal>as</literal>—open a file for appending in synchronous mode. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1459 If the file does not exist, it will be created |
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Documented fileSystem methods in njs.
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|
1460 </listitem> |
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|
1461 |
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|
1462 <listitem> |
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|
1463 <literal>as+</literal>—open a file for reading and appending |
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|
1464 in synchronous mode. |
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Documented fileSystem methods in njs.
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|
1465 If the file does not exist, it will be created |
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|
1466 </listitem> |
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|
1467 |
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|
1468 <listitem> |
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|
1469 <literal>r</literal>—open a file for reading. |
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|
1470 An exception occurs if the file does not exist |
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|
1471 </listitem> |
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|
1472 |
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|
1473 <listitem> |
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|
1474 <literal>r+</literal>—open a file for reading and writing. |
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|
1475 An exception occurs if the file does not exist |
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1476 </listitem> |
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|
1477 |
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|
1478 <listitem> |
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|
1479 <literal>rs+</literal>—open a file for reading and writing |
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|
1480 in synchronous mode. |
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|
1481 Instructs the operating system to bypass the local file system cache |
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1482 </listitem> |
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|
1483 |
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1484 <listitem> |
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|
1485 <literal>w</literal>—open a file for writing. |
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|
1486 If the file does not exist, it will be created. |
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|
1487 If the file exists, it will be replaced |
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1488 </listitem> |
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|
1489 |
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|
1490 <listitem> |
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|
1491 <literal>wx</literal>—the same as <literal>w</literal> |
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|
1492 but fails if the file already exists |
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1493 </listitem> |
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|
1494 |
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|
1495 <listitem> |
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|
1496 <literal>w+</literal>—open a file for reading and writing. |
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|
1497 If the file does not exist, it will be created. |
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|
1498 If the file exists, it will be replaced |
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1499 </listitem> |
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|
1500 |
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1501 <listitem> |
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|
1502 <literal>wx+</literal>—the same as <literal>w+</literal> |
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|
1503 but fails if the file already exists |
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1504 </listitem> |
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1505 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1506 </list> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1507 </para> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1508 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1509 </section> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1510 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1511 </section> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1512 |
2176 | 1513 </section> |
1514 | |
2175
cd4889fdcfa4
Moved njs HTTP and Stream API to a separate page.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff
changeset
|
1515 </article> |