Mercurial > hg > nginx-site
annotate xml/en/docs/njs/reference.xml @ 2353:21f3a93fbe97
njs-0.3.0
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Tue, 26 Mar 2019 17:19:37 +0300 |
parents | 5e17930672f5 |
children | ea6964391d52 |
rev | line source |
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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" |
2353 | 12 rev="26"> |
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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 </tag-desc> |
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115 |
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117 <tag-desc> |
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118 holds the <link id="subrequest">subrequest</link> response body, read-only. |
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119 The size of <literal>r.responseBody</literal> is limited by the |
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120 <link doc="../http/ngx_http_core_module.xml" id="subrequest_output_buffer_size"/> |
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121 directive. |
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122 </tag-desc> |
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123 |
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124 <tag-name><literal>r.return(status[, string])</literal></tag-name> |
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125 <tag-desc> |
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126 sends the entire response |
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127 with the specified <literal>status</literal> to the client |
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128 <para> |
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129 It is possible to specify either a redirect URL |
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130 (for codes 301, 302, 303, 307, and 308) |
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131 or the response body text (for other codes) as the second argument |
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132 </para> |
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133 </tag-desc> |
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134 |
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135 <tag-name><literal>r.send(<value>string</value>)</literal></tag-name> |
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136 <tag-desc> |
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137 sends a part of the response body to the client |
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138 </tag-desc> |
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139 |
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140 <tag-name><literal>r.sendHeader()</literal></tag-name> |
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141 <tag-desc> |
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142 sends the HTTP headers to the client |
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143 </tag-desc> |
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144 |
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145 <tag-name><literal>r.status</literal></tag-name> |
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146 <tag-desc> |
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147 status, writable |
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148 </tag-desc> |
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149 |
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150 <tag-name id="r_variables"><literal>r.variables{}</literal></tag-name> |
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151 <tag-desc> |
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152 nginx variables object, |
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153 writable (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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154 </tag-desc> |
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155 |
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156 <tag-name><literal>r.warn(<value>string</value>)</literal></tag-name> |
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157 <tag-desc> |
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158 writes a <literal>string</literal> to the error log |
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159 on the <literal>warning</literal> level of logging |
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160 </tag-desc> |
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161 |
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162 <tag-name id="r_uri"><literal>r.uri</literal></tag-name> |
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163 <tag-desc> |
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164 current <link doc="../http/ngx_http_core_module.xml" id="var_uri">URI</link> |
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165 in request, |
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166 <link doc="../http/ngx_http_core_module.xml" id="location">normalized</link>, |
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167 read-only |
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168 </tag-desc> |
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169 |
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170 <tag-name id="subrequest"><literal>r.subrequest(<value>uri</value>[, |
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171 <value>options</value>[, <value>callback</value>]])</literal></tag-name> |
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172 <tag-desc> |
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173 creates a subrequest with the given <literal>uri</literal> and |
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174 <literal>options</literal>, and installs |
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175 an optional completion <literal>callback</literal>. |
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176 |
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177 <para> |
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178 A |
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179 <link doc="../dev/development_guide.xml.xml" id="http_subrequests">subrequest</link> |
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180 shares its input headers with the client request. |
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181 To send headers different from original headers to a proxied server, the |
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182 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_set_header"/> |
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183 directive can be used. |
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184 To send a completely new set of headers to a proxied server, the |
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185 <link doc="../http/ngx_http_proxy_module.xml" id="proxy_pass_request_headers"/> |
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186 directive can be used. |
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187 </para> |
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188 |
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189 <para> |
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190 If <literal>options</literal> is a string, then it |
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191 holds the subrequest arguments string. |
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192 Otherwise, <literal>options</literal> is expected to be |
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193 an object with the following keys: |
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194 <list type="tag"> |
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195 <tag-name><literal>args</literal></tag-name> |
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196 <tag-desc> |
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197 arguments string, by default an empty string is used |
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198 </tag-desc> |
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199 <tag-name><literal>body</literal></tag-name> |
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200 <tag-desc> |
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201 request body, |
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202 by default the request body of the parent request object is used |
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203 </tag-desc> |
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204 |
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205 <tag-name><literal>method</literal></tag-name> |
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206 <tag-desc> |
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207 HTTP method, by default the <literal>GET</literal> method is used |
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208 </tag-desc> |
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209 |
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210 </list> |
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211 </para> |
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212 |
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213 <para> |
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214 The completion <literal>callback</literal> receives |
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215 a subrequest response object with methods and properties |
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216 identical to the parent request object. |
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217 </para> |
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218 </tag-desc> |
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219 |
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220 </list> |
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221 </para> |
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222 |
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223 </section> |
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224 |
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225 |
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226 <section id="stream" name="Stream Session"> |
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227 |
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228 <para> |
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229 The stream session object is available only in the |
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230 <link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link> |
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231 module. |
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232 All string properties of the object are <link id="string">byte strings</link>. |
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233 </para> |
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234 |
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235 <para> |
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236 <list type="tag"> |
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237 |
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238 <tag-name id="s_allow"><literal>s.allow()</literal></tag-name> |
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239 <tag-desc> |
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240 successfully finalizes the phase handler |
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241 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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242 </tag-desc> |
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243 |
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244 <tag-name id="s_decline"><literal>s.decline()</literal></tag-name> |
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245 <tag-desc> |
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246 finalizes the phase handler and passes control to the next handler |
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247 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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248 </tag-desc> |
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249 |
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250 <tag-name id="s_deny"><literal>s.deny()</literal></tag-name> |
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251 <tag-desc> |
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252 finalizes the phase handler with the access error code |
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253 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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254 </tag-desc> |
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255 |
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256 <tag-name id="s_done"><literal>s.done</literal>(<value>[code]</value>)</tag-name> |
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257 <tag-desc> |
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258 successfully finalizes the current phase handler |
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259 or finalizes it with the specified numeric code |
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260 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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261 </tag-desc> |
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262 |
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263 <tag-name><literal>s.error(<value>string</value>)</literal></tag-name> |
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264 <tag-desc> |
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265 writes a sent <literal>string</literal> to the error log |
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266 on the <literal>error</literal> level of logging |
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267 </tag-desc> |
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268 |
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269 <tag-name><literal>s.log(<value>string</value>)</literal></tag-name> |
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270 <tag-desc> |
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271 writes a sent <value>string</value> to the error log |
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272 on the <literal>info</literal> level of logging |
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273 </tag-desc> |
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274 |
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275 <tag-name id="s_off"><literal>s.off(<value>eventName</value>)</literal></tag-name> |
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276 <tag-desc> |
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277 unregisters the callback set by the <link id="s_on">s.on()</link> method |
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278 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>) |
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279 </tag-desc> |
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280 |
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281 <tag-name id="s_on"><literal>s.on(<value>event</value>, |
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282 <value>callback</value>)</literal></tag-name> |
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283 <tag-desc> |
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284 registers a <literal>callback</literal> for the specified <literal>event</literal> |
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285 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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286 |
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287 <para> |
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288 An <literal>event</literal> may be one of the following strings: |
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289 <list type="tag"> |
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290 <tag-name><literal>upload</literal></tag-name> |
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291 <tag-desc> |
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292 new data from a client |
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293 </tag-desc> |
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294 |
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295 <tag-name><literal>download</literal></tag-name> |
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296 <tag-desc> |
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297 new data to a client |
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298 </tag-desc> |
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299 |
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300 </list> |
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301 </para> |
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302 |
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303 <para> |
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304 The completion callback has the following prototype: |
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305 <literal>callback(data, flags)</literal>, where |
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306 <literal>data</literal> is string, |
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307 <literal>flags</literal> is an object |
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308 with the following properties: |
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309 <list type="tag"> |
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310 <tag-name id="s_on_callback_last"><literal>last</literal></tag-name> |
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311 <tag-desc> |
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312 a boolean value, true if data is a last buffer. |
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313 </tag-desc> |
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314 |
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315 </list> |
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316 </para> |
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317 </tag-desc> |
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318 |
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319 <tag-name><literal>s.remoteAddress</literal></tag-name> |
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320 <tag-desc> |
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321 client address, read-only |
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322 </tag-desc> |
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323 |
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324 <tag-name id="s_send"><literal>s.send(<value>data</value>[, |
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325 <value>options</value>])</literal></tag-name> |
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326 <tag-desc> |
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327 sends the data to the client |
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328 (<link doc="changes.xml" id="njs0.2.4">0.2.4</link>). |
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329 The <literal>options</literal> is an object used |
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330 to override nginx buffer flags derived from an incoming data chunk buffer. |
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331 The flags can be overriden with the following flags: |
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332 <para> |
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333 <list type="tag"> |
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334 |
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335 <tag-name><literal>last</literal></tag-name> |
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336 <tag-desc> |
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337 boolean, true if the buffer is the last buffer |
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338 </tag-desc> |
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339 |
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340 <tag-name><literal>flush</literal></tag-name> |
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341 <tag-desc> |
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342 boolean, true if the buffer should have the <literal>flush</literal> flag |
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343 </tag-desc> |
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344 </list> |
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345 </para> |
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346 The method can be called multiple times per callback invocation. |
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347 </tag-desc> |
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348 |
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349 <tag-name id="s_variables"><literal>s.variables{}</literal></tag-name> |
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350 <tag-desc> |
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351 nginx variables object, writable |
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352 (since <link doc="changes.xml" id="njs0.2.8">0.2.8</link>) |
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353 </tag-desc> |
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354 |
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355 <tag-name><literal>s.warn(<value>string</value>)</literal></tag-name> |
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356 <tag-desc> |
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357 writes a sent <literal>string</literal> to the error log |
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358 on the <literal>warning</literal> level of logging |
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359 </tag-desc> |
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360 |
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361 </list> |
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362 </para> |
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363 |
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364 </section> |
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365 |
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366 </section> |
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367 |
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368 |
2176 | 369 <section id="core" name="Core"> |
370 | |
371 | |
2312 | 372 <section id="core_object" name="Object"> |
373 | |
374 <para> | |
375 The <literal>Object</literal> constructor corresponds to a standard JS object. | |
376 <list type="tag"> | |
377 | |
378 <tag-name id="object_entries"><literal>Object.entries(<value>object</value>)</literal></tag-name> | |
379 <tag-desc> | |
380 returns an array of all enumerable property | |
381 <literal>[key, value]</literal> pairs | |
382 of the given <literal>object</literal> | |
383 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
384 </tag-desc> | |
385 | |
386 <tag-name id="object_values"><literal>Object.values(<value>object</value>)</literal></tag-name> | |
387 <tag-desc> | |
388 returns an array of all enumerable property values | |
389 of the given <literal>object</literal> | |
390 (<link doc="changes.xml" id="njs0.2.7">0.2.7</link>). | |
391 </tag-desc> | |
392 | |
393 </list> | |
394 </para> | |
395 | |
396 </section> | |
397 | |
398 | |
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399 <section id="string" name="String"> |
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400 |
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401 <para> |
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402 There are two types of strings in njs: a Unicode string (default) and |
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403 a byte string. |
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404 </para> |
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405 |
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406 <para> |
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407 A Unicode string corresponds to an ECMAScript string |
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408 which contains Unicode characters. |
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409 </para> |
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410 |
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411 <para> |
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412 Byte strings contain a sequence of bytes |
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413 and are used to serialize Unicode strings |
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414 to external data and deserialize from external sources. |
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415 For example, the <link id="string_toutf8">toUTF8()</link> method serializes |
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416 a Unicode string to a byte string using UTF8 encoding: |
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417 <example> |
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418 >> '£'.toUTF8().toString('hex') |
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419 'c2a3' /* C2 A3 is the UTF8 representation of 00A3 ('£') code point */ |
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420 </example> |
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421 The <link id="string_tobytes">toBytes()</link> method serializes |
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422 a Unicode string with code points up to 255 into a byte string, |
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423 otherwise, <literal>null</literal> is returned: |
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424 <example> |
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425 >> '£'.toBytes().toString('hex') |
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426 'a3' /* a3 is a byte equal to 00A3 ('£') code point */ |
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427 </example> |
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428 Only byte strings can be converted to different encodings. |
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429 For example, a string cannot be encoded to <literal>hex</literal> directly: |
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430 <example> |
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431 >> 'αβγδ'.toString('base64') |
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432 TypeError: argument must be a byte string |
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433 at String.prototype.toString (native) |
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434 at main (native) |
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435 </example> |
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436 To convert a Unicode string to hex, |
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437 first, it should be converted to a byte string and then to hex: |
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438 <example> |
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439 >> 'αβγδ'.toUTF8().toString('base64') |
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440 'zrHOss6zzrQ=' |
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441 </example> |
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442 |
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443 <list type="tag"> |
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444 |
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445 <tag-name id="string_bytesfrom"><literal>String.bytesFrom(<value>array</value> |
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446 | <value>string</value>, <value>encoding</value>)</literal></tag-name> |
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447 <tag-desc> |
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448 (njs specific) Creates a byte string either from an array that contains octets, |
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449 or from an encoded string |
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450 (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
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451 The encoding can be |
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452 <literal>hex</literal>, |
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453 <literal>base64</literal>, and |
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454 <literal>base64url</literal>. |
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455 <example> |
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456 >> String.bytesFrom([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]) |
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457 'buffer' |
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458 |
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459 >> String.bytesFrom('YnVmZmVy', 'base64') |
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460 'buffer' |
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461 </example> |
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462 </tag-desc> |
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463 |
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464 <tag-name id="string_fromcharcode"><literal>String.fromCharCode(<value>CharCode1</value>[, ...[, |
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465 <value>CharCodeN</value>]])</literal></tag-name> |
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466 <tag-desc> |
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467 Returns a string from one or more Unicode code points. |
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468 <example> |
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469 >> String.fromCharCode(97, 98, 99, 100) |
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470 'abcd' |
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471 </example> |
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472 </tag-desc> |
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473 |
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474 <tag-name id="string_fromcodepoint"><literal>String.fromCodePoint(<value>codePoint1</value>[, ...[, |
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475 <value>codePoint2</value>]])</literal></tag-name> |
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476 <tag-desc> |
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477 Returns a string from one or more Unicode code points. |
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478 <example> |
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|
479 >> String.fromCodePoint(97, 98, 99, 100) |
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|
480 'abcd' |
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481 </example> |
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482 </tag-desc> |
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|
483 |
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Described charAt, codePointAt, fromCharCode in njs.
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|
484 <tag-name id="string_charat"><literal>String.prototype.charAt(<value>index</value>)</literal></tag-name> |
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|
485 <tag-desc> |
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486 Returns a string representing one Unicode code unit |
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Described charAt, codePointAt, fromCharCode in njs.
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|
487 at the specified <literal>index</literal>; |
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Described charAt, codePointAt, fromCharCode in njs.
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|
488 empty string if index is out of range. |
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|
489 The index can be an integer |
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|
490 between 0 and 1-less-than the length of the string. |
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Described charAt, codePointAt, fromCharCode in njs.
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|
491 If no index is provided, the default is <literal>0</literal>, |
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Described charAt, codePointAt, fromCharCode in njs.
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|
492 so the first character in the string is returned. |
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Described charAt, codePointAt, fromCharCode in njs.
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|
493 </tag-desc> |
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|
494 |
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Described charAt, codePointAt, fromCharCode in njs.
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diff
changeset
|
495 <tag-name id="string_codepointat"><literal>String.prototype.CodePointAt(<value>position</value>)</literal></tag-name> |
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|
496 <tag-desc> |
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|
497 Returns a number representing the code point value of the character |
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|
498 at the given <literal>position</literal>; |
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499 <literal>undefined</literal> if there is no element at position. |
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|
500 <example> |
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501 >> 'ABCD'.codePointAt(3); |
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|
502 68 |
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503 </example> |
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504 </tag-desc> |
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|
505 |
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|
506 <tag-name id="string_concat"><literal>String.prototype.concat(<value>string1</value>[, ..., |
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507 <value>stringN</value>])</literal></tag-name> |
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508 <tag-desc> |
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509 Returns a string that contains the concatenation of specified |
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510 <literal>strings</literal>. |
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|
511 <example> |
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|
512 >> "a".concat("b", "c") |
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|
513 'abc' |
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514 </example> |
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|
515 </tag-desc> |
8e2b3aadc3ce
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|
516 |
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diff
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|
517 <tag-name id="string_endswith"><literal>String.prototype.endsWith(<value>searchString</value>[, |
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518 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
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|
519 <tag-desc> |
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|
520 Returns <literal>true</literal> if a string ends with the characters |
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parents:
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521 of a specified string, otherwise <literal>false</literal>. |
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diff
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|
522 The optional <literal>length</literal> parameter is the the length of string. |
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523 If omitted, the default value is the length of the string. |
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diff
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|
524 <example> |
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|
525 >> 'abc'.endsWith('abc') |
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2183
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|
526 true |
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diff
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|
527 >> 'abca'.endsWith('abc') |
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Added njs String object.
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parents:
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|
528 false |
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Added njs String object.
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|
529 </example> |
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Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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|
530 </tag-desc> |
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Added njs String object.
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|
531 |
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Added links to njs reference from njs Compatibility.
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|
532 <tag-name id="string_frombytes"><literal>String.prototype.fromBytes(<value>start</value>[, |
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|
533 <value>end</value>])</literal></tag-name> |
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|
534 <tag-desc> |
8e2b3aadc3ce
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changeset
|
535 (njs specific) Returns a new Unicode string from a byte string |
8e2b3aadc3ce
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|
536 where each byte is replaced with a corresponding Unicode code point. |
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2183
diff
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|
537 </tag-desc> |
8e2b3aadc3ce
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2183
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|
538 |
2267
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Yaroslav Zhuravlev <yar@nginx.com>
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|
539 <tag-name id="string_fromutf8"><literal>String.prototype.fromUTF8(<value>start</value>[, |
2186
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Added njs String object.
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|
540 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
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|
541 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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|
542 (njs specific) Converts a byte string containing a valid UTF8 string |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
543 into a Unicode string, |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
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|
544 otherwise <literal>null</literal> is returned. |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
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2183
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|
545 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
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|
546 |
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Added links to njs reference from njs Compatibility.
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|
547 <tag-name id="string_includes"><literal>String.prototype.includes(<value>searchString</value>[, |
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Added njs String object.
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diff
changeset
|
548 <value>position</value>]))</literal></tag-name> |
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Added njs String object.
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parents:
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diff
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|
549 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
changeset
|
550 Returns <literal>true</literal> if a string is found within another string, |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
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|
551 otherwise <literal>false</literal>. |
8e2b3aadc3ce
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parents:
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diff
changeset
|
552 The optional <literal>position</literal> parameter is the position |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
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|
553 within the string at which to begin search for <literal>searchString</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
554 Default value is 0. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
555 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
556 >> 'abc'.includes('bc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
557 true |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
558 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
559 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
560 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
561 <tag-name id="string_indexof"><literal>String.prototype.indexOf(<value>searchString</value>[, |
2186
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2183
diff
changeset
|
562 <value>fromIndex</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
563 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
564 Returns the position of the first occurrence |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
565 of the <literal>searchString</literal>. |
2186
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Added njs String object.
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parents:
2183
diff
changeset
|
566 The search is started at <literal>fromIndex</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
567 Returns <value>-1</value> if the value is not found. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
568 The <literal>fromIndex</literal> is an integer, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
569 default value is 0. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
570 If <literal>fromIndex</literal> is lower than 0 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
571 or greater than |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
572 <link id="string_length">String.prototype.length</link><value></value>, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
573 the search starts at index <value>0</value> and |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
574 <value>String.prototype.length</value>. |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
575 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
576 >> 'abcdef'.indexOf('de', 2) |
8e2b3aadc3ce
Added njs String object.
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parents:
2183
diff
changeset
|
577 3 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
578 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
579 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
580 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
581 <tag-name id="string_lastindexof"><literal>String.prototype.lastIndexOf(<value>searchString</value>[, |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
582 <value>fromIndex</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
583 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
584 Returns the position of the last occurrence |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
585 of the <literal>searchString</literal>, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
586 searching backwards from <literal>fromIndex</literal>. |
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587 Returns <value>-1</value> if the value is not found. |
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588 If <literal>searchString</literal> is empty, |
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589 then <literal>fromIndex</literal> is returned. |
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|
590 <example> |
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|
591 >> "nginx".lastIndexOf("gi") |
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|
592 1 |
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|
593 </example> |
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|
594 </tag-desc> |
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|
595 |
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596 <tag-name id="string_length"><literal>String.prototype.length</literal></tag-name> |
8e2b3aadc3ce
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|
597 <tag-desc> |
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598 Returns the length of the string. |
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|
599 <example> |
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|
600 >> 'αβγδ'.length |
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|
601 4 |
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|
602 </example> |
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|
603 </tag-desc> |
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|
604 |
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c30048802769
Added links to njs reference from njs Compatibility.
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|
605 <tag-name id="string_match"><literal>String.prototype.match([<value>regexp</value>])</literal></tag-name> |
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606 <tag-desc> |
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|
607 Matches a string against a <literal>regexp</literal>. |
8e2b3aadc3ce
Added njs String object.
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parents:
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|
608 <example> |
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parents:
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|
609 >> 'nginx'.match( /ng/i ) |
2214
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Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
610 'ng' |
2186
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|
611 </example> |
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|
612 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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|
613 |
2212
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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|
614 <tag-name id="string_padend"><literal>String.prototype.padEnd(<value>length</value> |
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Documented padEnd() and padStart() for njs.
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parents:
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|
615 [, <value>string</value>])</literal></tag-name> |
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Documented padEnd() and padStart() for njs.
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|
616 <tag-desc> |
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Documented padEnd() and padStart() for njs.
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parents:
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diff
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|
617 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
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parents:
2313
diff
changeset
|
618 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:
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|
619 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
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Documented padEnd() and padStart() for njs.
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parents:
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|
620 <example> |
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parents:
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|
621 >> '1234'.padEnd(8, 'abcd') |
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Documented padEnd() and padStart() for njs.
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|
622 '1234abcd' |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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diff
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|
623 </example> |
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|
624 </tag-desc> |
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parents:
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diff
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|
625 |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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changeset
|
626 <tag-name id="string_padstart"><literal>String.prototype.padStart(<value>length</value> |
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|
627 [, <value>string</value>])</literal></tag-name> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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|
628 <tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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parents:
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|
629 Returns a string of a specified <literal>length</literal> |
2315
ae56e4613280
Corrected language in njs.
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parents:
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diff
changeset
|
630 with the pad <literal>string</literal> applied to the start of the specified |
2337
867fe207f13e
Updated links to changes.xml in njs Reference.
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parents:
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diff
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|
631 string (<link doc="changes.xml" id="njs0.2.3">0.2.3</link>). |
2212
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|
632 <example> |
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Documented padEnd() and padStart() for njs.
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|
633 >> '1234'.padStart(8, 'abcd') |
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parents:
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|
634 'abcd1234' |
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Documented padEnd() and padStart() for njs.
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parents:
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|
635 </example> |
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diff
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|
636 </tag-desc> |
c34a885b9d99
Documented padEnd() and padStart() for njs.
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|
637 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
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changeset
|
638 <tag-name id="string_repeat"><literal>String.prototype.repeat(<value>number</value>)</literal></tag-name> |
2186
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|
639 <tag-desc> |
2315
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Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
640 Returns a string |
2186
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|
641 with the specified <literal>number</literal> of copies of the string. |
8e2b3aadc3ce
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parents:
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diff
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|
642 <example> |
8e2b3aadc3ce
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parents:
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diff
changeset
|
643 >> 'abc'.repeat(3) |
2214
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|
644 'abcabcabc' |
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Added njs String object.
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|
645 </example> |
8e2b3aadc3ce
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
646 </tag-desc> |
8e2b3aadc3ce
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|
647 |
2267
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|
648 <tag-name id="string_replace"><literal>String.prototype.replace([<value>regexp</value>|<value>string</value>[, |
2186
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|
649 <value>string</value>|<value>function</value>]])</literal></tag-name> |
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|
650 <tag-desc> |
8e2b3aadc3ce
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|
651 Returns a new string with matches of a pattern |
8e2b3aadc3ce
Added njs String object.
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parents:
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diff
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|
652 (<literal>string</literal> or a <literal>regexp</literal>) |
8e2b3aadc3ce
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changeset
|
653 replaced by a <literal>string</literal> or a <literal>function</literal>. |
8e2b3aadc3ce
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|
654 <example> |
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Added njs String object.
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|
655 >> 'abcdefgh'.replace('d', 1) |
2214
e029f4bc7ede
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diff
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|
656 'abc1efgh' |
2186
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parents:
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diff
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|
657 </example> |
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|
658 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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|
659 |
2267
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|
660 <tag-name id="string_search"><literal>String.prototype.search([<value>regexp</value>])</literal></tag-name> |
2186
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|
661 <tag-desc> |
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|
662 Searches for a string using a <literal>regexp</literal> |
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|
663 <example> |
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|
664 >> 'abcdefgh'.search('def') |
8e2b3aadc3ce
Added njs String object.
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|
665 3 |
8e2b3aadc3ce
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|
666 </example> |
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|
667 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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|
668 |
2267
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Added links to njs reference from njs Compatibility.
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|
669 <tag-name id="string_slice"><literal>String.prototype.slice(<value>start</value>[, |
2186
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|
670 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
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|
671 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
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changeset
|
672 Returns a new string containing a part of an |
8e2b3aadc3ce
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parents:
2183
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changeset
|
673 original string between <literal>start</literal> |
8e2b3aadc3ce
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|
674 and <literal>end</literal> or |
8e2b3aadc3ce
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changeset
|
675 from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
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|
676 <example> |
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Added njs String object.
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changeset
|
677 >> 'abcdefghijklmno'.slice(NaN, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
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parents:
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diff
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|
678 'abcde' |
2186
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|
679 </example> |
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changeset
|
680 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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parents:
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changeset
|
681 |
2268
cd1b26111884
Moved string.split to follow alphabetical order.
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diff
changeset
|
682 <tag-name id="string_split"><literal>String.prototype.split(([<value>string</value>|<value>regexp</value>[, |
cd1b26111884
Moved string.split to follow alphabetical order.
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parents:
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|
683 <value>limit</value>]]))</literal></tag-name> |
cd1b26111884
Moved string.split to follow alphabetical order.
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2267
diff
changeset
|
684 <tag-desc> |
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Moved string.split to follow alphabetical order.
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parents:
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|
685 Returns match of a string against a <literal>regexp</literal>. |
cd1b26111884
Moved string.split to follow alphabetical order.
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|
686 The optional <literal>limit</literal> parameter is an integer that specifies |
cd1b26111884
Moved string.split to follow alphabetical order.
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changeset
|
687 a limit on the number of splits to be found. |
cd1b26111884
Moved string.split to follow alphabetical order.
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|
688 <example> |
cd1b26111884
Moved string.split to follow alphabetical order.
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diff
changeset
|
689 >> 'abc'.split('') |
cd1b26111884
Moved string.split to follow alphabetical order.
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changeset
|
690 [ |
cd1b26111884
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diff
changeset
|
691 'a', |
cd1b26111884
Moved string.split to follow alphabetical order.
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diff
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|
692 'b', |
cd1b26111884
Moved string.split to follow alphabetical order.
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|
693 'c' |
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Moved string.split to follow alphabetical order.
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diff
changeset
|
694 ] |
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diff
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|
695 </example> |
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Moved string.split to follow alphabetical order.
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|
696 </tag-desc> |
cd1b26111884
Moved string.split to follow alphabetical order.
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parents:
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diff
changeset
|
697 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
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parents:
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changeset
|
698 <tag-name id="string_startswith"><literal>String.prototype.startsWith(<value>searchString</value>[, |
2186
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changeset
|
699 <value>position</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
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changeset
|
700 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
701 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
|
702 of a specified string, otherwise <literal>false</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
703 The optional <literal>position</literal> parameter is the position |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
704 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
|
705 Default value is 0. |
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 >> 'abc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
708 true |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
709 > 'aabc'.startsWith('abc') |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
710 false |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
711 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
712 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
713 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
714 <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
|
715 <value>length</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
716 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
717 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
|
718 from <literal>start</literal> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
719 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
|
720 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
721 >> 'abcdefghijklmno'.substr(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
722 'defgh' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
723 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
724 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
725 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
726 <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
|
727 <value>end</value>])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
728 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
729 Returns the part of the string between |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
730 <literal>start</literal> and <literal>end</literal> or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
731 from <literal>start</literal> to the end of the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
732 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
733 >> 'abcdefghijklmno'.substring(3, 5) |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
734 'de' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
735 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
736 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
737 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
738 <tag-name id="string_tobytes"><literal>String.prototype.toBytes(start[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
739 end])</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
740 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
741 (njs specific) Serializes a Unicode string to a byte string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
742 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
|
743 found in the string. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
744 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
745 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
746 <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
|
747 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
748 Converts a string to lower case. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
749 The method supports only simple Unicode folding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
750 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
751 >> 'ΑΒΓΔ'.toLowerCase() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
752 'αβγδ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
753 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
754 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
755 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
756 <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
|
757 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
758 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
759 If no <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
760 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
|
761 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
762 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
763 <para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
764 (njs specific) If <literal>encoding</literal> is specified, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
765 encodes a <link id="string_tobytes">byte string</link> to |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
766 <literal>hex</literal>, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
767 <literal>base64</literal>, or |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
768 <literal>base64url</literal>. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
769 </para> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
770 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
771 >> 'αβγδ'.toUTF8().toString('base64url') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
772 'zrHOss6zzrQ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
773 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
774 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
775 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
776 <tag-name id="string_touppercase"><literal>String.prototype.toUpperCase()</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
777 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
778 Converts a string to upper case. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
779 The method supports only simple Unicode folding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
780 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
781 >> 'αβγδ'.toUpperCase() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
782 'ΑΒΓΔ' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
783 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
784 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
785 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
786 <tag-name id="string_toutf8"><literal>String.prototype.toUTF8(<value>start</value>[, |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
787 <value>end</value>])</literal></tag-name> |
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 (njs specific) Serializes a Unicode string |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
790 to a byte string using UTF8 encoding. |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
791 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
792 >> 'αβγδ'.toUTF8().length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
793 8 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
794 >> 'αβγδ'.length |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
795 4 |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
796 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
797 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
798 |
2267
c30048802769
Added links to njs reference from njs Compatibility.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2259
diff
changeset
|
799 <tag-name id="string_trim"><literal>String.prototype.trim()</literal></tag-name> |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
800 <tag-desc> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
801 Removes whitespaces from both ends of a string. |
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 >> ' abc '.trim() |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
804 'abc' |
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 id="encodeuri"><literal>encodeURI(<value>URI</value>)</literal></tag-name> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
809 <tag-desc> |
2315
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
810 Encodes a URI by replacing each instance of certain characters |
ae56e4613280
Corrected language in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2313
diff
changeset
|
811 by one, two, three, or four escape sequences |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
812 representing the UTF-8 encoding of the character |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
813 <example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
814 >> encodeURI('012αβγδ') |
2214
e029f4bc7ede
Added quotes to njs examples.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2212
diff
changeset
|
815 '012%CE%B1%CE%B2%CE%B3%CE%B4' |
2186
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
816 </example> |
8e2b3aadc3ce
Added njs String object.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
2183
diff
changeset
|
817 </tag-desc> |
8e2b3aadc3ce
Added njs String object.
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818 |
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819 <tag-name id="encodeuricomponent"><literal>encodeURIComponent(<value>encodedURIString</value>)</literal></tag-name> |
2186
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820 <tag-desc> |
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821 Encodes a URI by replacing each instance of certain characters |
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822 by one, two, three, or four escape sequences |
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823 representing the UTF-8 encoding of the character. |
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824 <example> |
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825 >> encodeURIComponent('[@?=') |
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826 '%5B%40%3F%3D' |
2186
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827 </example> |
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828 </tag-desc> |
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829 |
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830 <tag-name id="decodeuri"><literal>decodeURI(<value>encodedURI</value>)</literal></tag-name> |
2186
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831 <tag-desc> |
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832 Decodes a previously <link id="encodeuri">encoded</link> URI. |
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833 <example> |
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834 >> decodeURI('012%CE%B1%CE%B2%CE%B3%CE%B4') |
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835 '012αβγδ' |
2186
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836 </example> |
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837 </tag-desc> |
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838 |
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839 <tag-name id="decodeuricomponent"><literal>decodeURIComponent(<value>decodedURIString</value>)</literal></tag-name> |
2186
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840 <tag-desc> |
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841 Decodes an encoded component of a previously encoded URI. |
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842 <example> |
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843 >> decodeURIComponent('%5B%40%3F%3D') |
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844 '[@?=' |
2186
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845 </example> |
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846 </tag-desc> |
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847 |
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848 </list> |
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849 </para> |
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850 |
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851 </section> |
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|
852 |
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853 |
2176 | 854 <section id="core_json" name="JSON"> |
855 | |
856 <para> | |
857 The <literal>JSON</literal> object (ES 5.1) provides functions | |
858 to convert njs values to and from JSON format. | |
859 <list type="tag"> | |
860 | |
861 <tag-name><literal>JSON.parse(<value>string</value>[, | |
862 <value>reviver</value>])</literal></tag-name> | |
863 <tag-desc> | |
864 Converts a <literal>string</literal> that represents JSON data | |
865 into an njs object (<literal>{...}</literal>) or | |
866 array (<literal>[...]</literal>). | |
867 The optional <literal>reviver</literal> parameter is a function (key, value) | |
868 that will be called for each (key,value) pair and can transform the value. | |
869 </tag-desc> | |
870 | |
871 <tag-name><literal>JSON.stringify(<value>value</value>[, | |
872 <value>replacer</value>] [, <value>space</value>])</literal></tag-name> | |
873 <tag-desc> | |
874 Converts an njs object back to JSON. | |
875 The obligatory <literal>value</literal> parameter is generally a JSON | |
876 <literal>object</literal> or <literal>array</literal> that will be converted. | |
877 If the value has a <literal>toJSON()</literal> method, | |
878 it defines how the object will be serialized. | |
879 The optional <literal>replacer</literal> parameter is | |
880 a <literal>function</literal> or <literal>array</literal> | |
881 that transforms results. | |
882 The optional <literal>space</literal> parameter is | |
883 a <literal>string</literal> or <literal>number</literal>. | |
884 If it is a <literal>number</literal>, | |
885 it indicates the number of white spaces placed before a result | |
886 (no more than 10). | |
887 If it is a <literal>string</literal>, | |
888 it is used as a white space (or first 10 characters of it). | |
889 If omitted or is <literal>null</literal>, no white space is used. | |
890 </tag-desc> | |
891 </list> | |
892 </para> | |
893 | |
894 <para> | |
895 <example> | |
896 >> var json = JSON.parse('{"a":1, "b":true}') | |
897 >> json.a | |
898 1 | |
899 | |
900 >> JSON.stringify(json) | |
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901 '{"a":1,"b":true}' |
2176 | 902 |
903 >> JSON.stringify({ x: [10, undefined, function(){}] }) | |
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904 '{"x":[10,null,null]}' |
2176 | 905 |
906 >> JSON.stringify({"a":1, "toJSON": function() {return "xxx"}}) | |
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907 '"xxx"' |
2176 | 908 |
909 # Example with function replacer | |
910 | |
911 >> function replacer(key, value) {return (typeof value === 'string') ? undefined : value} | |
912 >>JSON.stringify({a:1, b:"b", c:true}, replacer) | |
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913 '{"a":1,"c":true}' |
2176 | 914 </example> |
915 </para> | |
916 | |
917 </section> | |
918 | |
2177 | 919 |
920 <section id="crypto" name="Crypto"> | |
921 | |
922 <para> | |
923 The Crypto module provides cryptographic functionality support. | |
924 The Crypto module object is returned by <literal>require('crypto')</literal>. | |
925 </para> | |
926 | |
927 <para> | |
928 <list type="tag"> | |
929 | |
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930 <tag-name id="crypto_createhash"><literal>crypto.createHash(<value>algorithm</value>)</literal></tag-name> |
2177 | 931 <tag-desc> |
932 Creates and returns a <link id="crypto_hash">Hash</link> object | |
933 that can be used to generate hash digests | |
934 using the given <value>algorithm</value>. | |
935 The algorighm can be | |
936 <literal>md5</literal>, | |
937 <literal>sha1</literal>, and | |
938 <literal>sha256</literal>. | |
939 </tag-desc> | |
940 | |
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941 <tag-name id="crypto_createhmac"><literal>crypto.createHmac(<value>algorithm</value>, |
2177 | 942 <value>secret key</value>)</literal></tag-name> |
943 <tag-desc> | |
944 Creates and returns an <link id="crypto_hmac">HMAC</link> object | |
945 that uses the given <value>algorithm</value> and <value>secret key</value>. | |
946 The algorighm can be | |
947 <literal>md5</literal>, | |
948 <literal>sha1</literal>, and | |
949 <literal>sha256</literal>. | |
950 </tag-desc> | |
951 | |
952 </list> | |
953 </para> | |
954 | |
955 | |
956 <section id="crypto_hash" name="Hash"> | |
957 | |
958 <para> | |
959 <list type="tag"> | |
960 | |
961 <tag-name><literal>hash.update(<value>data</value>)</literal></tag-name> | |
962 <tag-desc> | |
963 Updates the hash content with the given <value>data</value>. | |
964 </tag-desc> | |
965 | |
966 <tag-name><literal>hash.digest([<value>encoding</value>])</literal></tag-name> | |
967 <tag-desc> | |
968 Calculates the digest of all of the data passed using | |
969 <literal>hash.update()</literal>. | |
970 The encoding can be | |
971 <literal>hex</literal>, | |
972 <literal>base64</literal>, and | |
973 <literal>base64url</literal>. | |
974 If encoding is not provided, a byte string is returned. | |
975 </tag-desc> | |
976 | |
977 </list> | |
978 </para> | |
979 | |
980 <para> | |
981 <example> | |
982 >> var cr = require('crypto') | |
983 undefined | |
984 | |
985 >> cr.createHash('sha1').update('A').update('B').digest('base64url') | |
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986 'BtlFlCqiamG-GMPiK_GbvKjdK10' |
2177 | 987 </example> |
988 </para> | |
989 | |
990 </section> | |
991 | |
992 | |
993 <section id="crypto_hmac" name="HMAC"> | |
994 | |
995 <para> | |
996 <list type="tag"> | |
997 | |
998 <tag-name><literal>hmac.update(<value>data</value>)</literal></tag-name> | |
999 <tag-desc> | |
1000 Updates the HMAC content with the given <value>data</value>. | |
1001 </tag-desc> | |
1002 | |
1003 <tag-name><literal>hmac.digest([<value>encoding</value>])</literal></tag-name> | |
1004 <tag-desc> | |
1005 Calculates the HMAC digest of all of the data passed using | |
1006 <literal>hmac.update()</literal>. | |
1007 The encoding can be | |
1008 <literal>hex</literal>, | |
1009 <literal>base64</literal>, and | |
1010 <literal>base64url</literal>. | |
1011 If encoding is not provided, a byte string is returned. | |
1012 </tag-desc> | |
1013 </list> | |
1014 </para> | |
1015 | |
1016 <para> | |
1017 <example> | |
1018 >> var cr = require('crypto') | |
1019 undefined | |
1020 | |
1021 >> cr.createHmac('sha1', 'secret.key').update('AB').digest('base64url') | |
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1022 'Oglm93xn23_MkiaEq_e9u8zk374' |
2177 | 1023 </example> |
1024 </para> | |
1025 | |
1026 </section> | |
1027 | |
1028 </section> | |
1029 | |
2203
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1030 <section id="njs_api_timers" name="Timers"> |
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1031 |
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1032 <para> |
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1033 |
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1034 <list type="tag"> |
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1035 |
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1036 <tag-name id="cleartimeout"><literal>clearTimeout(<value>timeout</value>)</literal></tag-name> |
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1037 <tag-desc> |
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1038 Cancels a <literal>timeout</literal> object |
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1039 created by <link id="settimeout">setTimeout()</link>. |
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1040 </tag-desc> |
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1041 |
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1042 <tag-name id="settimeout"><literal>setTimeout(<value>function</value>, |
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1043 <value>ms</value>[, <value>arg1</value>, <value>argN</value>])</literal></tag-name> |
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1044 <tag-desc> |
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1045 Calls a <literal>function</literal> |
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1046 after a specified number of <literal>milliseconds</literal>. |
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1047 One or more optional <literal>arguments</literal> |
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1048 can be passed to the specified function. |
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1049 Returns a <literal>timeout</literal> object. |
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1050 <example> |
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1051 function handler(v) |
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1052 { |
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1053 // ... |
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1054 } |
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1055 |
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1056 t = setTimeout(handler, 12); |
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1057 |
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1058 // ... |
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1059 |
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1060 clearTimeout(t); |
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1061 </example> |
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1062 </tag-desc> |
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1063 |
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1064 </list> |
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1065 </para> |
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1066 |
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1067 </section> |
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1068 |
2204
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1069 |
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1070 <section id="njs_api_fs" name="File System"> |
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changeset
|
1071 |
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Documented fileSystem methods in njs.
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|
1072 <para> |
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|
1073 The File System module provides operations with files. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1074 The module object is returned by <literal>require('fs')</literal>. |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1075 <list type="tag"> |
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Documented fileSystem methods in njs.
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|
1076 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1077 <tag-name id="appendfilesync"><literal>appendFileSync(<value>filename</value>, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1078 <value>data</value>[, <value>options</value>])</literal></tag-name> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1079 <tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1080 Synchronously appends specified <literal>data</literal> |
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Documented fileSystem methods in njs.
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parents:
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|
1081 to a file with provided <literal>filename</literal>. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1082 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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|
1083 The <literal>options</literal> parameter is expected to be |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1084 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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|
1085 <list type="tag"> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1086 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1087 <tag-name><literal>mode</literal></tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1088 <tag-desc> |
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Documented fileSystem methods in njs.
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|
1089 mode option, by default is <literal>0o666</literal> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1090 </tag-desc> |
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|
1091 |
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|
1092 <tag-name><literal>flag</literal></tag-name> |
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|
1093 <tag-desc> |
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|
1094 file system <link id="njs_api_fs_flags">flag</link>, |
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|
1095 by default is <literal>a</literal> |
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|
1096 </tag-desc> |
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|
1097 |
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|
1098 </list> |
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|
1099 </tag-desc> |
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|
1100 |
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|
1101 <tag-name id="readfilesync"><literal>readFileSync(<value>filename</value>[, |
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|
1102 <value>options</value>])</literal></tag-name> |
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|
1103 <tag-desc> |
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|
1104 Synchronously returns the contents of the file |
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|
1105 with provided <literal>filename</literal>. |
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|
1106 The <literal>options</literal> parameter holds |
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Documented fileSystem methods in njs.
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parents:
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|
1107 <literal>string</literal> that specifies encoding. |
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|
1108 If not specified, a <link id="string_tobytes">byte string</link> is returned. |
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|
1109 If <literal>utf8</literal> encoding is specified, a Unicode string is returned. |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1110 Otherwise, <literal>options</literal> is expected to be |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1111 an object with the following keys: |
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|
1112 <list type="tag"> |
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|
1113 |
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|
1114 <tag-name><literal>encoding</literal></tag-name> |
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|
1115 <tag-desc> |
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|
1116 encoding, by default is not specified. |
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parents:
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|
1117 The encoding can be <literal>utf8</literal> |
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|
1118 </tag-desc> |
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|
1119 |
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|
1120 <tag-name><literal>flag</literal></tag-name> |
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|
1121 <tag-desc> |
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|
1122 file system <link id="njs_api_fs_flags">flag</link>, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1123 by default is <literal>r</literal> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1124 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1125 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1126 </list> |
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|
1127 <example> |
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|
1128 >> var fs = require('fs') |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1129 undefined |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1130 >> var file = fs.readFileSync('/file/path.tar.gz') |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1131 undefined |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1132 >> var gzipped = /^\x1f\x8b/.test(file); gzipped |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1133 true |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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diff
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|
1134 </example> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1135 </tag-desc> |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1136 |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1137 <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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|
1138 <value>data</value>[, |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1139 <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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|
1140 <tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1141 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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|
1142 with provided <literal>filename</literal>. |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1143 If the file does not exist, it will be created, |
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Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1144 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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|
1145 The <literal>options</literal> parameter is expected to be |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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diff
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|
1146 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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|
1147 <list type="tag"> |
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Documented fileSystem methods in njs.
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parents:
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|
1148 <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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|
1149 <tag-desc> |
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Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
parents:
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|
1150 mode option, by default is <literal>0o666</literal> |
001f2d905fd9
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1151 </tag-desc> |
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|
1152 |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1153 <tag-name><literal>flag</literal></tag-name> |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1154 <tag-desc> |
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|
1155 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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|
1156 by default is <literal>w</literal> |
001f2d905fd9
Documented fileSystem methods in njs.
Yaroslav Zhuravlev <yar@nginx.com>
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|
1157 </tag-desc> |
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Documented fileSystem methods in njs.
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|
1158 |
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Documented fileSystem methods in njs.
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|
1159 </list> |
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|
1160 <example> |
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|
1161 >> var fs = require('fs') |
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Documented fileSystem methods in njs.
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|
1162 undefined |
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Documented fileSystem methods in njs.
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|
1163 >> var file = fs.writeFileSync('hello.txt', 'Hello world') |
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|
1164 undefined |
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Documented fileSystem methods in njs.
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|
1165 </example> |
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Documented fileSystem methods in njs.
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|
1166 </tag-desc> |
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|
1167 |
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|
1168 </list> |
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|
1169 </para> |
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|
1170 |
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|
1171 |
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|
1172 <section id="njs_api_fs_flags" name="File System Flags"> |
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Documented fileSystem methods in njs.
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|
1173 |
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|
1174 <para> |
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|
1175 The <literal>flag</literal> option can accept the following values: |
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|
1176 |
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|
1177 <list type= "bullet" compact="no"> |
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|
1178 |
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|
1179 <listitem> |
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|
1180 <literal>a</literal>—open a file for appending. |
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|
1181 The file is created if it does not exist |
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|
1182 </listitem> |
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|
1183 |
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|
1184 <listitem> |
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|
1185 <literal>ax</literal>—the same as <literal>a</literal> |
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|
1186 but fails if the file already exists |
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|
1187 </listitem> |
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1188 |
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1189 <listitem> |
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1190 <literal>a+</literal>—open a file for reading and appending. |
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1191 If the file does not exist, it will be created |
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1192 </listitem> |
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1193 |
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1194 <listitem> |
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1195 <literal>ax+</literal>—the same as <literal>a+</literal> |
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1196 but fails if the file already exists |
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1197 </listitem> |
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|
1198 |
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1199 <listitem> |
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1200 <literal>as</literal>—open a file for appending in synchronous mode. |
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1201 If the file does not exist, it will be created |
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1202 </listitem> |
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|
1203 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1204 <listitem> |
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|
1205 <literal>as+</literal>—open a file for reading and appending |
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1206 in synchronous mode. |
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1207 If the file does not exist, it will be created |
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1208 </listitem> |
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|
1209 |
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Yaroslav Zhuravlev <yar@nginx.com>
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|
1210 <listitem> |
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1211 <literal>r</literal>—open a file for reading. |
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1212 An exception occurs if the file does not exist |
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1213 </listitem> |
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|
1214 |
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|
1215 <listitem> |
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1216 <literal>r+</literal>—open a file for reading and writing. |
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1217 An exception occurs if the file does not exist |
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1218 </listitem> |
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|
1219 |
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1220 <listitem> |
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1221 <literal>rs+</literal>—open a file for reading and writing |
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1222 in synchronous mode. |
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1223 Instructs the operating system to bypass the local file system cache |
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1224 </listitem> |
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|
1225 |
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1226 <listitem> |
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1227 <literal>w</literal>—open a file for writing. |
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1228 If the file does not exist, it will be created. |
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1229 If the file exists, it will be replaced |
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1230 </listitem> |
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|
1231 |
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1232 <listitem> |
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1233 <literal>wx</literal>—the same as <literal>w</literal> |
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1234 but fails if the file already exists |
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1235 </listitem> |
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|
1236 |
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|
1237 <listitem> |
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1238 <literal>w+</literal>—open a file for reading and writing. |
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1239 If the file does not exist, it will be created. |
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1240 If the file exists, it will be replaced |
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1241 </listitem> |
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|
1242 |
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1243 <listitem> |
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1244 <literal>wx+</literal>—the same as <literal>w+</literal> |
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1245 but fails if the file already exists |
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1246 </listitem> |
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1247 |
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1248 </list> |
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1249 </para> |
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|
1250 |
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1251 </section> |
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|
1252 |
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1253 </section> |
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|
1254 |
2176 | 1255 </section> |
1256 | |
2175
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1257 </article> |