Mercurial > hg > nginx-site
annotate xml/en/docs/njs/reference.xml @ 2410:392e11db3260
Development guide: added the "Common Pitfalls" section.
author | Vladimir Homutov <vl@nginx.com> |
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date | Tue, 23 Jul 2019 19:07:55 +0300 |
parents | dbf68c949522 |
children | 3b7223f9aac8 |
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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="29"> |
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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 </para> |
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60 </tag-desc> |
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61 |
2331 | 62 <tag-name id="r_headers_out"><literal>r.headersOut{}</literal></tag-name> |
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63 <tag-desc> |
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64 outgoing headers object, writable. |
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65 <para> |
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66 For example, the <literal>Foo</literal> header |
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67 can be accessed with the syntax <literal>headersOut.foo</literal> |
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68 or <literal>headersOut['Foo']</literal> |
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69 </para> |
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70 </tag-desc> |
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71 |
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72 <tag-name><literal>r.httpVersion</literal></tag-name> |
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73 <tag-desc> |
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74 HTTP version, read-only |
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75 </tag-desc> |
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76 |
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77 <tag-name><literal>r.log(<value>string</value>)</literal></tag-name> |
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78 <tag-desc> |
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79 writes a <literal>string</literal> to the error log |
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80 on the <literal>info</literal> level of logging |
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81 </tag-desc> |
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82 |
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83 <tag-name id="r_internal_redirect"><literal>r.internalRedirect(<value>uri</value>)</literal></tag-name> |
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84 <tag-desc> |
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85 performs an internal redirect to the specified <literal>uri</literal>. |
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86 If the uri starts with the “<literal>@</literal>” prefix, |
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87 it is considered a named location. |
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88 </tag-desc> |
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89 |
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90 <tag-name><literal>r.method</literal></tag-name> |
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91 <tag-desc> |
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92 HTTP method, read-only |
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93 </tag-desc> |
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94 |
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95 <tag-name><literal>r.parent</literal></tag-name> |
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96 <tag-desc> |
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97 references the parent request object |
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98 </tag-desc> |
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99 |
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100 <tag-name><literal>r.remoteAddress</literal></tag-name> |
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101 <tag-desc> |
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102 client address, read-only |
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103 </tag-desc> |
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104 |
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105 <tag-name id="r_request_body"><literal>r.requestBody</literal></tag-name> |
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106 <tag-desc> |
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107 returns the client request body if it has not been |
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108 written to a temporary file. |
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109 To ensure that the client request body is in memory, |
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110 its size should be limited by |
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111 <link doc="../http/ngx_http_core_module.xml" id="client_max_body_size"/>, |
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112 and a sufficient buffer size should be set using |
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113 <link doc="../http/ngx_http_core_module.xml" id="client_body_buffer_size"/>. |
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114 The property is available only in the |
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115 <link doc="../http/ngx_http_js_module.xml" id="js_content"/> directive. |
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116 </tag-desc> |
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117 |
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119 <tag-desc> |
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120 holds the <link id="subrequest">subrequest</link> response body, read-only. |
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121 The size of <literal>r.responseBody</literal> is limited by the |
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122 <link doc="../http/ngx_http_core_module.xml" id="subrequest_output_buffer_size"/> |
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123 directive. |
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124 </tag-desc> |
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125 |
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126 <tag-name><literal>r.return(status[, string])</literal></tag-name> |
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127 <tag-desc> |
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128 sends the entire response |
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129 with the specified <literal>status</literal> to the client |
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130 <para> |
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131 It is possible to specify either a redirect URL |
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132 (for codes 301, 302, 303, 307, and 308) |
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133 or the response body text (for other codes) as the second argument |
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134 </para> |
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135 </tag-desc> |
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136 |
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137 <tag-name><literal>r.send(<value>string</value>)</literal></tag-name> |
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138 <tag-desc> |
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139 sends a part of the response body to the client |
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140 </tag-desc> |
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141 |
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142 <tag-name><literal>r.sendHeader()</literal></tag-name> |
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143 <tag-desc> |
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144 sends the HTTP headers to the client |
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145 </tag-desc> |
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146 |
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147 <tag-name><literal>r.status</literal></tag-name> |
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148 <tag-desc> |
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149 status, writable |
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150 </tag-desc> |
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151 |
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152 <tag-name id="r_variables"><literal>r.variables{}</literal></tag-name> |
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153 <tag-desc> |
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154 nginx variables object, |
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155 writable (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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156 </tag-desc> |
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157 |
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158 <tag-name><literal>r.warn(<value>string</value>)</literal></tag-name> |
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159 <tag-desc> |
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160 writes a <literal>string</literal> to the error log |
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161 on the <literal>warning</literal> level of logging |
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162 </tag-desc> |
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163 |
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164 <tag-name id="r_uri"><literal>r.uri</literal></tag-name> |
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165 <tag-desc> |
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166 current <link doc="../http/ngx_http_core_module.xml" id="var_uri">URI</link> |
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167 in request, |
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168 <link doc="../http/ngx_http_core_module.xml" id="location">normalized</link>, |
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169 read-only |
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170 </tag-desc> |
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171 |
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172 <tag-name id="subrequest"><literal>r.subrequest(<value>uri</value>[, |
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173 <value>options</value>[, <value>callback</value>]])</literal></tag-name> |
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174 <tag-desc> |
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175 creates a subrequest with the given <literal>uri</literal> and |
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176 <literal>options</literal>, and installs |
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177 an optional completion <literal>callback</literal>. |
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178 |
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179 <para> |
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180 A |
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181 <link doc="../dev/development_guide.xml.xml" id="http_subrequests">subrequest</link> |
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182 shares its input headers with the client request. |
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183 To send headers different from original headers to a proxied server, the |
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184 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_set_header"/> |
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185 directive can be used. |
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186 To send a completely new set of headers to a proxied server, the |
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187 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_pass_request_headers"/> |
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188 directive can be used. |
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189 </para> |
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190 |
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191 <para> |
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192 If <literal>options</literal> is a string, then it |
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193 holds the subrequest arguments string. |
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194 Otherwise, <literal>options</literal> is expected to be |
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195 an object with the following keys: |
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196 <list type="tag"> |
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197 <tag-name><literal>args</literal></tag-name> |
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198 <tag-desc> |
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199 arguments string, by default an empty string is used |
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200 </tag-desc> |
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201 <tag-name><literal>body</literal></tag-name> |
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202 <tag-desc> |
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203 request body, |
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204 by default the request body of the parent request object is used |
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205 </tag-desc> |
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206 |
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207 <tag-name><literal>method</literal></tag-name> |
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208 <tag-desc> |
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209 HTTP method, by default the <literal>GET</literal> method is used |
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210 </tag-desc> |
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211 |
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212 </list> |
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213 </para> |
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214 |
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215 <para> |
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216 The completion <literal>callback</literal> receives |
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217 a subrequest response object with methods and properties |
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218 identical to the parent request object. |
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219 </para> |
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220 </tag-desc> |
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221 |
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222 </list> |
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223 </para> |
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224 |
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225 </section> |
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226 |
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227 |
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228 <section id="stream" name="Stream Session"> |
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229 |
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230 <para> |
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231 The stream session object is available only in the |
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232 <link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link> |
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233 module. |
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234 All string properties of the object are <link id="string">byte strings</link>. |
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235 </para> |
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236 |
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237 <para> |
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238 <list type="tag"> |
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239 |
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240 <tag-name id="s_allow"><literal>s.allow()</literal></tag-name> |
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241 <tag-desc> |
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242 successfully finalizes the phase handler |
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243 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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244 </tag-desc> |
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245 |
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246 <tag-name id="s_decline"><literal>s.decline()</literal></tag-name> |
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247 <tag-desc> |
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248 finalizes the phase handler and passes control to the next handler |
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249 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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250 </tag-desc> |
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251 |
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252 <tag-name id="s_deny"><literal>s.deny()</literal></tag-name> |
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253 <tag-desc> |
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254 finalizes the phase handler with the access error code |
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255 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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256 </tag-desc> |
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257 |
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258 <tag-name id="s_done"><literal>s.done</literal>(<value>[code]</value>)</tag-name> |
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259 <tag-desc> |
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260 successfully finalizes the current phase handler |
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261 or finalizes it with the specified numeric code |
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262 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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263 </tag-desc> |
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264 |
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265 <tag-name><literal>s.error(<value>string</value>)</literal></tag-name> |
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266 <tag-desc> |
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267 writes a sent <literal>string</literal> to the error log |
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268 on the <literal>error</literal> level of logging |
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269 </tag-desc> |
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270 |
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271 <tag-name><literal>s.log(<value>string</value>)</literal></tag-name> |
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272 <tag-desc> |
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273 writes a sent <value>string</value> to the error log |
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274 on the <literal>info</literal> level of logging |
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275 </tag-desc> |
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276 |
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277 <tag-name id="s_off"><literal>s.off(<value>eventName</value>)</literal></tag-name> |
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278 <tag-desc> |
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279 unregisters the callback set by the <link id="s_on">s.on()</link> method |
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280 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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281 </tag-desc> |
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282 |
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283 <tag-name id="s_on"><literal>s.on(<value>event</value>, |
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284 <value>callback</value>)</literal></tag-name> |
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285 <tag-desc> |
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286 registers a <literal>callback</literal> for the specified <literal>event</literal> |
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287 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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288 |
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289 <para> |
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290 An <literal>event</literal> may be one of the following strings: |
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291 <list type="tag"> |
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292 <tag-name><literal>upload</literal></tag-name> |
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293 <tag-desc> |
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294 new data from a client |
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295 </tag-desc> |
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296 |
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297 <tag-name><literal>download</literal></tag-name> |
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298 <tag-desc> |
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299 new data to a client |
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300 </tag-desc> |
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301 |
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302 </list> |
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303 </para> |
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304 |
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305 <para> |
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306 The completion callback has the following prototype: |
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307 <literal>callback(data, flags)</literal>, where |
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308 <literal>data</literal> is string, |
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309 <literal>flags</literal> is an object |
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310 with the following properties: |
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311 <list type="tag"> |
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312 <tag-name id="s_on_callback_last"><literal>last</literal></tag-name> |
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313 <tag-desc> |
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314 a boolean value, true if data is a last buffer. |
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315 </tag-desc> |
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316 |
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317 </list> |
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318 </para> |
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319 </tag-desc> |
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320 |
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321 <tag-name><literal>s.remoteAddress</literal></tag-name> |
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322 <tag-desc> |
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323 client address, read-only |
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324 </tag-desc> |
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325 |
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326 <tag-name id="s_send"><literal>s.send(<value>data</value>[, |
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327 <value>options</value>])</literal></tag-name> |
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328 <tag-desc> |
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329 sends the data to the client |
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330 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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331 The <literal>options</literal> is an object used |
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332 to override nginx buffer flags derived from an incoming data chunk buffer. |
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333 The flags can be overriden with the following flags: |
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334 <para> |
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335 <list type="tag"> |
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336 |
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337 <tag-name><literal>last</literal></tag-name> |
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338 <tag-desc> |
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339 boolean, true if the buffer is the last buffer |
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340 </tag-desc> |
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341 |
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342 <tag-name><literal>flush</literal></tag-name> |
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343 <tag-desc> |
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344 boolean, true if the buffer should have the <literal>flush</literal> flag |
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345 </tag-desc> |
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346 </list> |
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347 </para> |
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348 The method can be called multiple times per callback invocation. |
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349 </tag-desc> |
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350 |
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351 <tag-name id="s_variables"><literal>s.variables{}</literal></tag-name> |
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352 <tag-desc> |
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353 nginx variables object, writable |
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354 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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355 </tag-desc> |
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356 |
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357 <tag-name><literal>s.warn(<value>string</value>)</literal></tag-name> |
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358 <tag-desc> |
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359 writes a sent <literal>string</literal> to the error log |
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360 on the <literal>warning</literal> level of logging |
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361 </tag-desc> |
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362 |
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363 </list> |
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364 </para> |
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365 |
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366 </section> |
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367 |
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368 </section> |
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369 |
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370 |
2176 | 371 <section id="core" name="Core"> |
372 | |
373 | |
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374 <section id="core_global" name="Global"> |
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375 |
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376 |
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377 <section id="process" name="Process"> |
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378 |
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379 <para> |
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380 The <literal>process</literal> object is a global object |
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381 that provides information about the current process |
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382 (<link doc="changes.xml" id="njs0.3.3">0.3.3</link>). |
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383 </para> |
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384 |
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385 |
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386 <para> |
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387 <list type="tag"> |
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388 |
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389 <tag-name id="process_argv"><literal>process.argv</literal></tag-name> |
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390 <tag-desc> |
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391 Returns an array that contains the command line arguments |
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392 passed when the current process was launched. |
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393 </tag-desc> |
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394 |
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395 <tag-name id="process_env"><literal>process.env</literal></tag-name> |
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396 <tag-desc> |
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397 Returns an object containing the user environment. |
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398 <note> |
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399 By default, nginx removes all environment variables inherited |
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400 from its parent process except the TZ variable. |
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401 Use the <link doc="../ngx_core_module.xml" id="env"/> directive |
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402 to preserve some of the inherited variables. |
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403 </note> |
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404 </tag-desc> |
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405 |
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406 <tag-name id="process_pid"><literal>process.pid</literal></tag-name> |
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407 <tag-desc> |
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408 Returns the PID of the current process. |
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409 </tag-desc> |
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410 |
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411 <tag-name id="process_ppid"><literal>process.ppid</literal></tag-name> |
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412 <tag-desc> |
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413 Returns the PID of the current parent process. |
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414 </tag-desc> |
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415 |
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416 </list> |
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417 </para> |
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418 |
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419 </section> |
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420 |
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421 </section> |
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422 |
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423 |
2312 | 424 <section id="core_object" name="Object"> |
425 | |
426 <para> | |
427 The <literal>Object</literal> constructor corresponds to a standard JS object. | |
428 <list type="tag"> | |
429 | |
430 <tag-name id="object_entries"><literal>Object.entries(<value>object</value>)</literal></tag-name> | |
431 <tag-desc> | |
432 returns an array of all enumerable property | |
433 <literal>[key, value]</literal> pairs | |
434 of the given <literal>object</literal> | |
435 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
436 </tag-desc> | |
437 | |
438 <tag-name id="object_values"><literal>Object.values(<value>object</value>)</literal></tag-name> | |
439 <tag-desc> | |
440 returns an array of all enumerable property values | |
441 of the given <literal>object</literal> | |
442 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
443 </tag-desc> | |
444 | |
445 </list> | |
446 </para> | |
447 | |
448 </section> | |
449 | |
450 | |
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451 <section id="string" name="String"> |
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452 |
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453 <para> |
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454 There are two types of strings in njs: a Unicode string (default) and |
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455 a byte string. |
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456 </para> |
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457 |
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458 <para> |
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459 A Unicode string corresponds to an ECMAScript string |
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460 which contains Unicode characters. |
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461 </para> |
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462 |
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463 <para> |
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464 Byte strings contain a sequence of bytes |
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465 and are used to serialize Unicode strings |
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466 to external data and deserialize from external sources. |
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467 For example, the <link id="string_toutf8">toUTF8()</link> method serializes |
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468 a Unicode string to a byte string using UTF8 encoding: |
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469 <example> |
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470 >> '£'.toUTF8().toString('hex') |
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471 'c2a3' /* C2 A3 is the UTF8 representation of 00A3 ('£') code point */ |
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472 </example> |
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473 The <link id="string_tobytes">toBytes()</link> method serializes |
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474 a Unicode string with code points up to 255 into a byte string, |
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475 otherwise, <literal>null</literal> is returned: |
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476 <example> |
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477 >> '£'.toBytes().toString('hex') |
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|
478 'a3' /* a3 is a byte equal to 00A3 ('£') code point */ |
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479 </example> |
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|
480 Only byte strings can be converted to different encodings. |
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481 For example, a string cannot be encoded to <literal>hex</literal> directly: |
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|
482 <example> |
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changeset
|
483 >> 'αβγδ'.toString('base64') |
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Added njs String object.
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|
484 TypeError: argument must be a byte string |
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Added njs String object.
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|
485 at String.prototype.toString (native) |
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|
486 at main (native) |
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Added njs String object.
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changeset
|
487 </example> |
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Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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|
488 To convert a Unicode string to hex, |
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Added njs String object.
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parents:
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changeset
|
489 first, it should be converted to a byte string and then to hex: |
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Added njs String object.
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changeset
|
490 <example> |
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Added njs String object.
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changeset
|
491 >> 'αβγδ'.toUTF8().toString('base64') |
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changeset
|
492 'zrHOss6zzrQ=' |
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|
493 </example> |
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Added njs String object.
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changeset
|
494 |
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Added njs String object.
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changeset
|
495 <list type="tag"> |
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Added njs String object.
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changeset
|
496 |
2211
660229c5c92f
Documented String.bytesFrom() method in njs.
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|
497 <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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|
498 | <value>string</value>, <value>encoding</value>)</literal></tag-name> |
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Documented String.bytesFrom() method in njs.
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changeset
|
499 <tag-desc> |
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Documented String.bytesFrom() method in njs.
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|
500 (njs specific) Creates a byte string either from an array that contains octets, |
2315
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Corrected language in njs.
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changeset
|
501 or from an encoded string |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
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|
502 (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2211
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changeset
|
503 The encoding can be |
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Documented String.bytesFrom() method in njs.
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changeset
|
504 <literal>hex</literal>, |
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Documented String.bytesFrom() method in njs.
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|
505 <literal>base64</literal>, and |
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diff
changeset
|
506 <literal>base64url</literal>. |
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Documented String.bytesFrom() method in njs.
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parents:
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|
507 <example> |
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|
508 >> String.bytesFrom([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]) |
660229c5c92f
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changeset
|
509 'buffer' |
660229c5c92f
Documented String.bytesFrom() method in njs.
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parents:
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changeset
|
510 |
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Documented String.bytesFrom() method in njs.
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parents:
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diff
changeset
|
511 >> String.bytesFrom('YnVmZmVy', 'base64') |
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Documented String.bytesFrom() method in njs.
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parents:
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|
512 'buffer' |
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|
513 </example> |
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|
514 </tag-desc> |
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Documented String.bytesFrom() method in njs.
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parents:
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changeset
|
515 |
2271
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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|
516 <tag-name id="string_fromcharcode"><literal>String.fromCharCode(<value>CharCode1</value>[, ...[, |
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Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
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|
517 <value>CharCodeN</value>]])</literal></tag-name> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
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diff
changeset
|
518 <tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
519 Returns a string from one or more Unicode code points. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
520 <example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
521 >> String.fromCharCode(97, 98, 99, 100) |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
522 'abcd' |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
523 </example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
524 </tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
525 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
526 <tag-name id="string_fromcodepoint"><literal>String.fromCodePoint(<value>codePoint1</value>[, ...[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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2183
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|
527 <value>codePoint2</value>]])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
528 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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2183
diff
changeset
|
529 Returns a string from one or more Unicode code points. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
530 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
531 >> String.fromCodePoint(97, 98, 99, 100) |
2214
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Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
532 'abcd' |
2186
8e2b3aadc3ce
Added njs String object.
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changeset
|
533 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
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changeset
|
534 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
535 |
2271
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
536 <tag-name id="string_charat"><literal>String.prototype.charAt(<value>index</value>)</literal></tag-name> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
537 <tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
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parents:
2268
diff
changeset
|
538 Returns a string representing one Unicode code unit |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
539 at the specified <literal>index</literal>; |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
540 empty string if index is out of range. |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
541 The index can be an integer |
2271
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
542 between 0 and 1-less-than the length of the string. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
543 If no index is provided, the default is <literal>0</literal>, |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
544 so the first character in the string is returned. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
545 </tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
546 |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
547 <tag-name id="string_codepointat"><literal>String.prototype.CodePointAt(<value>position</value>)</literal></tag-name> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
548 <tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
549 Returns a number representing the code point value of the character |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
550 at the given <literal>position</literal>; |
2271
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
551 <literal>undefined</literal> if there is no element at position. |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
552 <example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
553 >> 'ABCD'.codePointAt(3); |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
554 68 |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
555 </example> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
556 </tag-desc> |
34a1901e663d
Described charAt, codePointAt, fromCharCode in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2268
diff
changeset
|
557 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
558 <tag-name id="string_concat"><literal>String.prototype.concat(<value>string1</value>[, ..., |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
559 <value>stringN</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
560 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
561 Returns a string that contains the concatenation of specified |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
562 <literal>strings</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
563 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
564 >> "a".concat("b", "c") |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
565 'abc' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
566 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
567 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
568 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
569 <tag-name id="string_endswith"><literal>String.prototype.endsWith(<value>searchString</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
570 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
571 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
572 Returns <literal>true</literal> if a string ends with the characters |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
573 of a specified string, otherwise <literal>false</literal>. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
574 The optional <literal>length</literal> parameter is the the length of string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
575 If omitted, the default value is the length of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
576 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
577 >> 'abc'.endsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
578 true |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
579 >> 'abca'.endsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
580 false |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
581 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
582 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
583 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
584 <tag-name id="string_frombytes"><literal>String.prototype.fromBytes(<value>start</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
585 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
586 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
587 (njs specific) Returns a new Unicode string from a byte string |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
588 where each byte is replaced with a corresponding Unicode code point. |
8e2b3aadc3ce
Added njs String object.
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|
589 </tag-desc> |
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|
590 |
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|
591 <tag-name id="string_fromutf8"><literal>String.prototype.fromUTF8(<value>start</value>[, |
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592 <value>end</value>])</literal></tag-name> |
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|
593 <tag-desc> |
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|
594 (njs specific) Converts a byte string containing a valid UTF8 string |
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parents:
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diff
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|
595 into a Unicode string, |
8e2b3aadc3ce
Added njs String object.
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parents:
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|
596 otherwise <literal>null</literal> is returned. |
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diff
changeset
|
597 </tag-desc> |
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Added njs String object.
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parents:
2183
diff
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|
598 |
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Added links to njs reference from njs Compatibility.
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parents:
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changeset
|
599 <tag-name id="string_includes"><literal>String.prototype.includes(<value>searchString</value>[, |
2186
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|
600 <value>position</value>]))</literal></tag-name> |
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parents:
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|
601 <tag-desc> |
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parents:
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diff
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|
602 Returns <literal>true</literal> if a string is found within another string, |
8e2b3aadc3ce
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parents:
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|
603 otherwise <literal>false</literal>. |
8e2b3aadc3ce
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changeset
|
604 The optional <literal>position</literal> parameter is the position |
8e2b3aadc3ce
Added njs String object.
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|
605 within the string at which to begin search for <literal>searchString</literal>. |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
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|
606 Default value is 0. |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
607 <example> |
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parents:
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diff
changeset
|
608 >> 'abc'.includes('bc') |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
609 true |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
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|
610 </example> |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
611 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
612 |
2267
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parents:
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diff
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|
613 <tag-name id="string_indexof"><literal>String.prototype.indexOf(<value>searchString</value>[, |
2186
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changeset
|
614 <value>fromIndex</value>])</literal></tag-name> |
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|
615 <tag-desc> |
8e2b3aadc3ce
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|
616 Returns the position of the first occurrence |
2315
ae56e4613280
Corrected language in njs.
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parents:
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diff
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|
617 of the <literal>searchString</literal>. |
2186
8e2b3aadc3ce
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|
618 The search is started at <literal>fromIndex</literal>. |
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parents:
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diff
changeset
|
619 Returns <value>-1</value> if the value is not found. |
8e2b3aadc3ce
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changeset
|
620 The <literal>fromIndex</literal> is an integer, |
8e2b3aadc3ce
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|
621 default value is 0. |
8e2b3aadc3ce
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parents:
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changeset
|
622 If <literal>fromIndex</literal> is lower than 0 |
8e2b3aadc3ce
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parents:
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diff
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|
623 or greater than |
8e2b3aadc3ce
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parents:
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diff
changeset
|
624 <link id="string_length">String.prototype.length</link><value></value>, |
8e2b3aadc3ce
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parents:
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|
625 the search starts at index <value>0</value> and |
8e2b3aadc3ce
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|
626 <value>String.prototype.length</value>. |
8e2b3aadc3ce
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diff
changeset
|
627 <example> |
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changeset
|
628 >> 'abcdef'.indexOf('de', 2) |
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Added njs String object.
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parents:
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diff
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|
629 3 |
8e2b3aadc3ce
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parents:
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diff
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|
630 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
631 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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changeset
|
632 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
633 <tag-name id="string_lastindexof"><literal>String.prototype.lastIndexOf(<value>searchString</value>[, |
2186
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diff
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|
634 <value>fromIndex</value>])</literal></tag-name> |
8e2b3aadc3ce
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parents:
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changeset
|
635 <tag-desc> |
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Added njs String object.
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diff
changeset
|
636 Returns the position of the last occurrence |
8e2b3aadc3ce
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|
637 of the <literal>searchString</literal>, |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
638 searching backwards from <literal>fromIndex</literal>. |
8e2b3aadc3ce
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parents:
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changeset
|
639 Returns <value>-1</value> if the value is not found. |
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parents:
2183
diff
changeset
|
640 If <literal>searchString</literal> is empty, |
8e2b3aadc3ce
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parents:
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diff
changeset
|
641 then <literal>fromIndex</literal> is returned. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
642 <example> |
8e2b3aadc3ce
Added njs String object.
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diff
changeset
|
643 >> "nginx".lastIndexOf("gi") |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
644 1 |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
645 </example> |
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Added njs String object.
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parents:
2183
diff
changeset
|
646 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
647 |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
648 <tag-name id="string_length"><literal>String.prototype.length</literal></tag-name> |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
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|
649 <tag-desc> |
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Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
650 Returns the length of the string. |
8e2b3aadc3ce
Added njs String object.
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diff
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|
651 <example> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
652 >> 'αβγδ'.length |
8e2b3aadc3ce
Added njs String object.
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diff
changeset
|
653 4 |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
654 </example> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
655 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
656 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
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parents:
2259
diff
changeset
|
657 <tag-name id="string_match"><literal>String.prototype.match([<value>regexp</value>])</literal></tag-name> |
2186
8e2b3aadc3ce
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|
658 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
659 Matches a string against a <literal>regexp</literal>. |
8e2b3aadc3ce
Added njs String object.
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parents:
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changeset
|
660 <example> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
661 >> 'nginx'.match( /ng/i ) |
2214
e029f4bc7ede
Added quotes to njs examples.
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diff
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|
662 'ng' |
2186
8e2b3aadc3ce
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changeset
|
663 </example> |
8e2b3aadc3ce
Added njs String object.
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changeset
|
664 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
665 |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
666 <tag-name id="string_padend"><literal>String.prototype.padEnd(<value>length</value> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
667 [, <value>string</value>])</literal></tag-name> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
668 <tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
2211
diff
changeset
|
669 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
670 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
|
671 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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changeset
|
672 <example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
673 >> '1234'.padEnd(8, 'abcd') |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
674 '1234abcd' |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
2211
diff
changeset
|
675 </example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
2211
diff
changeset
|
676 </tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
677 |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
678 <tag-name id="string_padstart"><literal>String.prototype.padStart(<value>length</value> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
679 [, <value>string</value>])</literal></tag-name> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
680 <tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
681 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
682 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
|
683 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
changeset
|
684 <example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
685 >> '1234'.padStart(8, 'abcd') |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
686 'abcd1234' |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
687 </example> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
688 </tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2211
diff
changeset
|
689 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
690 <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:
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changeset
|
691 <tag-desc> |
2315
ae56e4613280
Corrected language in njs.
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parents:
2313
diff
changeset
|
692 Returns a string |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
693 with the specified <literal>number</literal> of copies of the string. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
694 <example> |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
695 >> 'abc'.repeat(3) |
2214
e029f4bc7ede
Added quotes to njs examples.
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parents:
2212
diff
changeset
|
696 'abcabcabc' |
2186
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changeset
|
697 </example> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
698 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
699 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
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parents:
2259
diff
changeset
|
700 <tag-name id="string_replace"><literal>String.prototype.replace([<value>regexp</value>|<value>string</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
701 <value>string</value>|<value>function</value>]])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
702 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
703 Returns a new string with matches of a pattern |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
704 (<literal>string</literal> or a <literal>regexp</literal>) |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
705 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
|
706 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
707 >> 'abcdefgh'.replace('d', 1) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
708 'abc1efgh' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
709 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
710 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
711 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
712 <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
|
713 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
714 Searches for a string using a <literal>regexp</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
715 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
716 >> 'abcdefgh'.search('def') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
717 3 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
718 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
719 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
720 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
721 <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
|
722 <value>end</value>])</literal></tag-name> |
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 Returns a new string containing a part of an |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
725 original string between <literal>start</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
726 and <literal>end</literal> or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
727 from <literal>start</literal> to the end of the string. |
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 >> 'abcdefghijklmno'.slice(NaN, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
730 'abcde' |
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 |
2268
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
734 <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
|
735 <value>limit</value>]]))</literal></tag-name> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
736 <tag-desc> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
737 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
|
738 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
|
739 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
|
740 <example> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
741 >> 'abc'.split('') |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
742 [ |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
743 'a', |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
744 'b', |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
745 'c' |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
746 ] |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
747 </example> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
748 </tag-desc> |
cd1b26111884
Moved string.split to follow alphabetical order.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2267
diff
changeset
|
749 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
750 <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
|
751 <value>position</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
752 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
753 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
|
754 of a specified string, otherwise <literal>false</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
755 The optional <literal>position</literal> parameter is the position |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
756 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
|
757 Default value is 0. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
758 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
759 >> 'abc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
760 true |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
761 > 'aabc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
762 false |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
763 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
764 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
765 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
766 <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
|
767 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
768 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
769 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
|
770 from <literal>start</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
771 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
|
772 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
773 >> 'abcdefghijklmno'.substr(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
774 'defgh' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
775 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
776 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
777 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
778 <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
|
779 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
780 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
781 Returns the part of the string between |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
782 <literal>start</literal> and <literal>end</literal> or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
783 from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
784 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
785 >> 'abcdefghijklmno'.substring(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
786 'de' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
787 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
788 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
789 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
790 <tag-name id="string_tobytes"><literal>String.prototype.toBytes(start[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
791 end])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
792 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
793 (njs specific) Serializes a Unicode string to a byte string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
794 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
|
795 found in the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
796 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
797 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
798 <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
|
799 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
800 Converts a string to lower case. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
801 The method supports only simple Unicode folding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
802 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
803 >> 'ΑΒΓΔ'.toLowerCase() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
804 'αβγδ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
805 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
806 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
807 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
808 <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
|
809 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
810 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
811 If no <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
812 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
|
813 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
814 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
815 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
816 (njs specific) If <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
817 encodes a <link id="string_tobytes">byte string</link> to |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
818 <literal>hex</literal>, |
8e2b3aadc3ce
Added njs String object.
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|
819 <literal>base64</literal>, or |
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|
820 <literal>base64url</literal>. |
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|
821 </para> |
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|
822 <example> |
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|
823 >> 'αβγδ'.toUTF8().toString('base64url') |
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|
824 'zrHOss6zzrQ' |
2186
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|
825 </example> |
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|
826 </tag-desc> |
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|
827 |
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828 <tag-name id="string_touppercase"><literal>String.prototype.toUpperCase()</literal></tag-name> |
2186
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|
829 <tag-desc> |
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|
830 Converts a string to upper case. |
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831 The method supports only simple Unicode folding. |
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|
832 <example> |
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|
833 >> 'αβγδ'.toUpperCase() |
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|
834 'ΑΒΓΔ' |
2186
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|
835 </example> |
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|
836 </tag-desc> |
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|
837 |
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|
838 <tag-name id="string_toutf8"><literal>String.prototype.toUTF8(<value>start</value>[, |
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|
839 <value>end</value>])</literal></tag-name> |
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|
840 <tag-desc> |
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|
841 (njs specific) Serializes a Unicode string |
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|
842 to a byte string using UTF8 encoding. |
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|
843 <example> |
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|
844 >> 'αβγδ'.toUTF8().length |
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|
845 8 |
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846 >> 'αβγδ'.length |
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|
847 4 |
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|
848 </example> |
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|
849 </tag-desc> |
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|
850 |
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|
851 <tag-name id="string_trim"><literal>String.prototype.trim()</literal></tag-name> |
2186
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|
852 <tag-desc> |
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|
853 Removes whitespaces from both ends of a string. |
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|
854 <example> |
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|
855 >> ' abc '.trim() |
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|
856 'abc' |
2186
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|
857 </example> |
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|
858 </tag-desc> |
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|
859 |
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|
860 <tag-name id="encodeuri"><literal>encodeURI(<value>URI</value>)</literal></tag-name> |
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|
861 <tag-desc> |
2315
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862 Encodes a URI by replacing each instance of certain characters |
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863 by one, two, three, or four escape sequences |
2186
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864 representing the UTF-8 encoding of the character |
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|
865 <example> |
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|
866 >> encodeURI('012αβγδ') |
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867 '012%CE%B1%CE%B2%CE%B3%CE%B4' |
2186
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|
868 </example> |
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|
869 </tag-desc> |
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|
870 |
2267
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|
871 <tag-name id="encodeuricomponent"><literal>encodeURIComponent(<value>encodedURIString</value>)</literal></tag-name> |
2186
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|
872 <tag-desc> |
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|
873 Encodes a URI by replacing each instance of certain characters |
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874 by one, two, three, or four escape sequences |
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|
875 representing the UTF-8 encoding of the character. |
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|
876 <example> |
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|
877 >> encodeURIComponent('[@?=') |
2214
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|
878 '%5B%40%3F%3D' |
2186
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|
879 </example> |
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|
880 </tag-desc> |
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|
881 |
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|
882 <tag-name id="decodeuri"><literal>decodeURI(<value>encodedURI</value>)</literal></tag-name> |
2186
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|
883 <tag-desc> |
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884 Decodes a previously <link id="encodeuri">encoded</link> URI. |
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885 <example> |
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886 >> decodeURI('012%CE%B1%CE%B2%CE%B3%CE%B4') |
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|
887 '012αβγδ' |
2186
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|
888 </example> |
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|
889 </tag-desc> |
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|
890 |
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891 <tag-name id="decodeuricomponent"><literal>decodeURIComponent(<value>decodedURIString</value>)</literal></tag-name> |
2186
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|
892 <tag-desc> |
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893 Decodes an encoded component of a previously encoded URI. |
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|
894 <example> |
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895 >> decodeURIComponent('%5B%40%3F%3D') |
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|
896 '[@?=' |
2186
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|
897 </example> |
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|
898 </tag-desc> |
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|
899 |
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|
900 </list> |
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|
901 </para> |
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|
902 |
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|
903 </section> |
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|
904 |
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|
905 |
2176 | 906 <section id="core_json" name="JSON"> |
907 | |
908 <para> | |
909 The <literal>JSON</literal> object (ES 5.1) provides functions | |
910 to convert njs values to and from JSON format. | |
911 <list type="tag"> | |
912 | |
2394
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913 <tag-name id="core_json_parse"><literal>JSON.parse(<value>string</value>[, |
2176 | 914 <value>reviver</value>])</literal></tag-name> |
915 <tag-desc> | |
916 Converts a <literal>string</literal> that represents JSON data | |
917 into an njs object (<literal>{...}</literal>) or | |
918 array (<literal>[...]</literal>). | |
919 The optional <literal>reviver</literal> parameter is a function (key, value) | |
920 that will be called for each (key,value) pair and can transform the value. | |
921 </tag-desc> | |
922 | |
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|
923 <tag-name id="core_json_stringify"><literal>JSON.stringify(<value>value</value>[, |
2176 | 924 <value>replacer</value>] [, <value>space</value>])</literal></tag-name> |
925 <tag-desc> | |
926 Converts an njs object back to JSON. | |
927 The obligatory <literal>value</literal> parameter is generally a JSON | |
928 <literal>object</literal> or <literal>array</literal> that will be converted. | |
929 If the value has a <literal>toJSON()</literal> method, | |
930 it defines how the object will be serialized. | |
931 The optional <literal>replacer</literal> parameter is | |
932 a <literal>function</literal> or <literal>array</literal> | |
933 that transforms results. | |
934 The optional <literal>space</literal> parameter is | |
935 a <literal>string</literal> or <literal>number</literal>. | |
936 If it is a <literal>number</literal>, | |
937 it indicates the number of white spaces placed before a result | |
938 (no more than 10). | |
939 If it is a <literal>string</literal>, | |
940 it is used as a white space (or first 10 characters of it). | |
941 If omitted or is <literal>null</literal>, no white space is used. | |
942 </tag-desc> | |
943 </list> | |
944 </para> | |
945 | |
946 <para> | |
947 <example> | |
948 >> var json = JSON.parse('{"a":1, "b":true}') | |
949 >> json.a | |
950 1 | |
951 | |
952 >> JSON.stringify(json) | |
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|
953 '{"a":1,"b":true}' |
2176 | 954 |
955 >> JSON.stringify({ x: [10, undefined, function(){}] }) | |
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956 '{"x":[10,null,null]}' |
2176 | 957 |
958 >> JSON.stringify({"a":1, "toJSON": function() {return "xxx"}}) | |
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|
959 '"xxx"' |
2176 | 960 |
961 # Example with function replacer | |
962 | |
963 >> function replacer(key, value) {return (typeof value === 'string') ? undefined : value} | |
964 >>JSON.stringify({a:1, b:"b", c:true}, replacer) | |
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|
965 '{"a":1,"c":true}' |
2176 | 966 </example> |
967 </para> | |
968 | |
969 </section> | |
970 | |
2177 | 971 |
972 <section id="crypto" name="Crypto"> | |
973 | |
974 <para> | |
975 The Crypto module provides cryptographic functionality support. | |
976 The Crypto module object is returned by <literal>require('crypto')</literal>. | |
977 </para> | |
978 | |
979 <para> | |
980 <list type="tag"> | |
981 | |
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982 <tag-name id="crypto_createhash"><literal>crypto.createHash(<value>algorithm</value>)</literal></tag-name> |
2177 | 983 <tag-desc> |
984 Creates and returns a <link id="crypto_hash">Hash</link> object | |
985 that can be used to generate hash digests | |
986 using the given <value>algorithm</value>. | |
987 The algorighm can be | |
988 <literal>md5</literal>, | |
989 <literal>sha1</literal>, and | |
990 <literal>sha256</literal>. | |
991 </tag-desc> | |
992 | |
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993 <tag-name id="crypto_createhmac"><literal>crypto.createHmac(<value>algorithm</value>, |
2177 | 994 <value>secret key</value>)</literal></tag-name> |
995 <tag-desc> | |
996 Creates and returns an <link id="crypto_hmac">HMAC</link> object | |
997 that uses the given <value>algorithm</value> and <value>secret key</value>. | |
998 The algorighm can be | |
999 <literal>md5</literal>, | |
1000 <literal>sha1</literal>, and | |
1001 <literal>sha256</literal>. | |
1002 </tag-desc> | |
1003 | |
1004 </list> | |
1005 </para> | |
1006 | |
1007 | |
1008 <section id="crypto_hash" name="Hash"> | |
1009 | |
1010 <para> | |
1011 <list type="tag"> | |
1012 | |
1013 <tag-name><literal>hash.update(<value>data</value>)</literal></tag-name> | |
1014 <tag-desc> | |
1015 Updates the hash content with the given <value>data</value>. | |
1016 </tag-desc> | |
1017 | |
1018 <tag-name><literal>hash.digest([<value>encoding</value>])</literal></tag-name> | |
1019 <tag-desc> | |
1020 Calculates the digest of all of the data passed using | |
1021 <literal>hash.update()</literal>. | |
1022 The encoding can be | |
1023 <literal>hex</literal>, | |
1024 <literal>base64</literal>, and | |
1025 <literal>base64url</literal>. | |
1026 If encoding is not provided, a byte string is returned. | |
1027 </tag-desc> | |
1028 | |
1029 </list> | |
1030 </para> | |
1031 | |
1032 <para> | |
1033 <example> | |
1034 >> var cr = require('crypto') | |
1035 undefined | |
1036 | |
1037 >> cr.createHash('sha1').update('A').update('B').digest('base64url') | |
2214
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1038 'BtlFlCqiamG-GMPiK_GbvKjdK10' |
2177 | 1039 </example> |
1040 </para> | |
1041 | |
1042 </section> | |
1043 | |
1044 | |
1045 <section id="crypto_hmac" name="HMAC"> | |
1046 | |
1047 <para> | |
1048 <list type="tag"> | |
1049 | |
1050 <tag-name><literal>hmac.update(<value>data</value>)</literal></tag-name> | |
1051 <tag-desc> | |
1052 Updates the HMAC content with the given <value>data</value>. | |
1053 </tag-desc> | |
1054 | |
1055 <tag-name><literal>hmac.digest([<value>encoding</value>])</literal></tag-name> | |
1056 <tag-desc> | |
1057 Calculates the HMAC digest of all of the data passed using | |
1058 <literal>hmac.update()</literal>. | |
1059 The encoding can be | |
1060 <literal>hex</literal>, | |
1061 <literal>base64</literal>, and | |
1062 <literal>base64url</literal>. | |
1063 If encoding is not provided, a byte string is returned. | |
1064 </tag-desc> | |
1065 </list> | |
1066 </para> | |
1067 | |
1068 <para> | |
1069 <example> | |
1070 >> var cr = require('crypto') | |
1071 undefined | |
1072 | |
1073 >> cr.createHmac('sha1', 'secret.key').update('AB').digest('base64url') | |
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1074 'Oglm93xn23_MkiaEq_e9u8zk374' |
2177 | 1075 </example> |
1076 </para> | |
1077 | |
1078 </section> | |
1079 | |
1080 </section> | |
1081 | |
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1082 <section id="njs_api_timers" name="Timers"> |
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1083 |
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1084 <para> |
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1085 |
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1086 <list type="tag"> |
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1087 |
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1088 <tag-name id="cleartimeout"><literal>clearTimeout(<value>timeout</value>)</literal></tag-name> |
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1089 <tag-desc> |
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1090 Cancels a <literal>timeout</literal> object |
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1091 created by <link id="settimeout">setTimeout()</link>. |
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1092 </tag-desc> |
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1093 |
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1094 <tag-name id="settimeout"><literal>setTimeout(<value>function</value>, |
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1095 <value>ms</value>[, <value>arg1</value>, <value>argN</value>])</literal></tag-name> |
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1096 <tag-desc> |
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1097 Calls a <literal>function</literal> |
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1098 after a specified number of <literal>milliseconds</literal>. |
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1099 One or more optional <literal>arguments</literal> |
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1100 can be passed to the specified function. |
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1101 Returns a <literal>timeout</literal> object. |
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1102 <example> |
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1103 function handler(v) |
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1104 { |
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1105 // ... |
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1106 } |
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1107 |
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1108 t = setTimeout(handler, 12); |
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1109 |
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1110 // ... |
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1111 |
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1112 clearTimeout(t); |
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1113 </example> |
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1114 </tag-desc> |
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1115 |
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1116 </list> |
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1117 </para> |
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1118 |
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1119 </section> |
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1120 |
2204
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1121 |
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1122 <section id="njs_api_fs" name="File System"> |
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1123 |
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1124 <para> |
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1125 The File System module provides operations with files. |
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1126 The module object is returned by <literal>require('fs')</literal>. |
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1127 <list type="tag"> |
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1128 |
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1129 <tag-name id="appendfilesync"><literal>appendFileSync(<value>filename</value>, |
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1130 <value>data</value>[, <value>options</value>])</literal></tag-name> |
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1131 <tag-desc> |
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1132 Synchronously appends specified <literal>data</literal> |
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1133 to a file with provided <literal>filename</literal>. |
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1134 If the file does not exist, it will be created. |
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1135 The <literal>options</literal> parameter is expected to be |
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1136 an object with the following keys: |
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1137 <list type="tag"> |
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1138 |
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1139 <tag-name><literal>mode</literal></tag-name> |
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1140 <tag-desc> |
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1141 mode option, by default is <literal>0o666</literal> |
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1142 </tag-desc> |
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1143 |
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1144 <tag-name><literal>flag</literal></tag-name> |
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1145 <tag-desc> |
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1146 file system <link id="njs_api_fs_flags">flag</link>, |
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1147 by default is <literal>a</literal> |
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1148 </tag-desc> |
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1149 |
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1150 </list> |
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1151 </tag-desc> |
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1152 |
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1153 <tag-name id="readfilesync"><literal>readFileSync(<value>filename</value>[, |
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1154 <value>options</value>])</literal></tag-name> |
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1155 <tag-desc> |
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1156 Synchronously returns the contents of the file |
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1157 with provided <literal>filename</literal>. |
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1158 The <literal>options</literal> parameter holds |
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1159 <literal>string</literal> that specifies encoding. |
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1160 If not specified, a <link id="string_tobytes">byte string</link> is returned. |
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1161 If <literal>utf8</literal> encoding is specified, a Unicode string is returned. |
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1162 Otherwise, <literal>options</literal> is expected to be |
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1163 an object with the following keys: |
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1164 <list type="tag"> |
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1165 |
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1166 <tag-name><literal>encoding</literal></tag-name> |
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1167 <tag-desc> |
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1168 encoding, by default is not specified. |
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1169 The encoding can be <literal>utf8</literal> |
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1170 </tag-desc> |
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1171 |
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1172 <tag-name><literal>flag</literal></tag-name> |
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1173 <tag-desc> |
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1174 file system <link id="njs_api_fs_flags">flag</link>, |
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1175 by default is <literal>r</literal> |
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1176 </tag-desc> |
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1177 |
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1178 </list> |
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1179 <example> |
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1180 >> var fs = require('fs') |
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1181 undefined |
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1182 >> var file = fs.readFileSync('/file/path.tar.gz') |
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1183 undefined |
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1184 >> var gzipped = /^\x1f\x8b/.test(file); gzipped |
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|
1185 true |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1186 </example> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1187 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1188 |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1189 <tag-name id="writefilesync"><literal>writeFileSync(<value>filename</value>, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1190 <value>data</value>[, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1191 <value>options</value>])</literal></tag-name> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1192 <tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1193 Synchronously writes <literal>data</literal> to a file |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1194 with provided <literal>filename</literal>. |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1195 If the file does not exist, it will be created, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1196 if the file exists, it will be replaced. |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1197 The <literal>options</literal> parameter is expected to be |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1198 an object with the following keys: |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1199 <list type="tag"> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1200 <tag-name><literal>mode</literal></tag-name> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1201 <tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1202 mode option, by default is <literal>0o666</literal> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1203 </tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1204 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1205 <tag-name><literal>flag</literal></tag-name> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1206 <tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1207 file system <link id="njs_api_fs_flags">flag</link>, |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1208 by default is <literal>w</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1209 </tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1210 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1211 </list> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1212 <example> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1213 >> var fs = require('fs') |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1214 undefined |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1215 >> var file = fs.writeFileSync('hello.txt', 'Hello world') |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1216 undefined |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1217 </example> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1218 </tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1219 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1220 </list> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1221 </para> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1222 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1223 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1224 <section id="njs_api_fs_flags" name="File System Flags"> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1225 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1226 <para> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1227 The <literal>flag</literal> option can accept the following values: |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1228 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1229 <list type= "bullet" compact="no"> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1230 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1231 <listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1232 <literal>a</literal>—open a file for appending. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1233 The file is created if it does not exist |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1234 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1235 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1236 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1237 <literal>ax</literal>—the same as <literal>a</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1238 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1239 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1240 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1241 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1242 <literal>a+</literal>—open a file for reading and appending. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1243 If the file does not exist, it will be created |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1244 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1245 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1246 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1247 <literal>ax+</literal>—the same as <literal>a+</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1248 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1249 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1250 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1251 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1252 <literal>as</literal>—open a file for appending in synchronous mode. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1253 If the file does not exist, it will be created |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1254 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1255 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1256 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1257 <literal>as+</literal>—open a file for reading and appending |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1258 in synchronous mode. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1259 If the file does not exist, it will be created |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1260 </listitem> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1261 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1262 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1263 <literal>r</literal>—open a file for reading. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1264 An exception occurs if the file does not exist |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1265 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1266 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1267 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1268 <literal>r+</literal>—open a file for reading and writing. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1269 An exception occurs if the file does not exist |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1270 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1271 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1272 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1273 <literal>rs+</literal>—open a file for reading and writing |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1274 in synchronous mode. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1275 Instructs the operating system to bypass the local file system cache |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1276 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
1277 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1278 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
1279 <literal>w</literal>—open a file for writing. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1280 If the file does not exist, it will be created. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1281 If the file exists, it will be replaced |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1282 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
1283 |
001f2d905fd9
Documented fileSystem methods in njs.
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parents:
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changeset
|
1284 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1285 <literal>wx</literal>—the same as <literal>w</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1286 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1287 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
1288 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1289 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1290 <literal>w+</literal>—open a file for reading and writing. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1291 If the file does not exist, it will be created. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1292 If the file exists, it will be replaced |
001f2d905fd9
Documented fileSystem methods in njs.
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|
1293 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1294 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1295 <listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1296 <literal>wx+</literal>—the same as <literal>w+</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1297 but fails if the file already exists |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1298 </listitem> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1299 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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changeset
|
1300 </list> |
001f2d905fd9
Documented fileSystem methods in njs.
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parents:
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diff
changeset
|
1301 </para> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
changeset
|
1302 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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changeset
|
1303 </section> |
001f2d905fd9
Documented fileSystem methods in njs.
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changeset
|
1304 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1305 </section> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2203
diff
changeset
|
1306 |
2176 | 1307 </section> |
1308 | |
2175
cd4889fdcfa4
Moved njs HTTP and Stream API to a separate page.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
diff
changeset
|
1309 </article> |