Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_js_module.xml @ 2508:d3d5b67a1462
Language fixes in njs file system methods.
author | Yaroslav Zhuravlev <yar@nginx.com> |
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date | Wed, 04 Mar 2020 11:30:48 +0000 |
parents | 1101e24c6d14 |
children | 407c5bd5bffc |
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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 module SYSTEM "../../../../dtd/module.dtd"> |
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8 |
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9 <module name="Module ngx_http_js_module" |
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10 link="/en/docs/http/ngx_http_js_module.html" |
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11 lang="en" |
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12 rev="19"> |
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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 The <literal>ngx_http_js_module</literal> module is used to implement |
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18 location and variable handlers |
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19 in <link doc="../njs/index.xml">njs</link> — |
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20 a subset of the JavaScript language. |
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21 </para> |
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22 |
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23 <para> |
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24 This module is not built by default. |
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25 Download and install instructions are available |
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26 <link doc="../njs/install.xml">here</link>. |
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27 </para> |
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28 |
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29 </section> |
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30 |
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31 |
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32 <section id="example" name="Example Configuration"> |
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33 |
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34 <para> |
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35 <example> |
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36 load_module modules/ngx_http_js_module.so; |
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37 ... |
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38 |
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39 http { |
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40 js_include http.js; |
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41 |
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42 js_set $foo foo; |
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43 js_set $summary summary; |
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44 |
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45 server { |
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46 listen 8000; |
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47 |
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48 location / { |
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49 add_header X-Foo $foo; |
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50 js_content baz; |
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51 } |
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52 |
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53 location = /summary { |
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54 return 200 $summary; |
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55 } |
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56 |
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57 location = /hello { |
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58 js_content hello; |
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59 } |
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60 } |
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61 } |
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62 </example> |
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63 </para> |
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64 |
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65 <para> |
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66 The <path>http.js</path> file: |
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67 <example> |
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68 function foo(r) { |
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69 r.log("hello from foo() handler"); |
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70 return "foo"; |
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71 } |
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72 |
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73 function summary(r) { |
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74 var a, s, h; |
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75 |
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76 s = "JS summary\n\n"; |
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77 |
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78 s += "Method: " + r.method + "\n"; |
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79 s += "HTTP version: " + r.httpVersion + "\n"; |
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80 s += "Host: " + r.headersIn.host + "\n"; |
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81 s += "Remote Address: " + r.remoteAddress + "\n"; |
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82 s += "URI: " + r.uri + "\n"; |
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83 |
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84 s += "Headers:\n"; |
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85 for (h in r.headersIn) { |
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86 s += " header '" + h + "' is '" + r.headersIn[h] + "'\n"; |
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87 } |
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88 |
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89 s += "Args:\n"; |
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90 for (a in r.args) { |
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91 s += " arg '" + a + "' is '" + r.args[a] + "'\n"; |
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92 } |
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93 |
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94 return s; |
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95 } |
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96 |
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97 function baz(r) { |
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98 r.status = 200; |
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99 r.headersOut.foo = 1234; |
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100 r.headersOut['Content-Type'] = "text/plain; charset=utf-8"; |
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101 r.headersOut['Content-Length'] = 15; |
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102 r.sendHeader(); |
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103 r.send("nginx"); |
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104 r.send("java"); |
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105 r.send("script"); |
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106 |
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107 r.finish(); |
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108 } |
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109 |
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110 function hello(r) { |
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111 r.return(200, "Hello world!"); |
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112 } |
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113 </example> |
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114 </para> |
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115 |
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116 </section> |
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117 |
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118 |
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119 <section id="directives" name="Directives"> |
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120 |
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121 <directive name="js_content"> |
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122 <syntax><value>function</value></syntax> |
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123 <default/> |
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124 <context>location</context> |
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125 <context>limit_except</context> |
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126 |
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127 <para> |
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128 Sets an njs function as a location content handler. |
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129 </para> |
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130 |
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131 </directive> |
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132 |
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133 |
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134 <directive name="js_include"> |
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135 <syntax><value>file</value></syntax> |
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136 <default/> |
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137 <context>http</context> |
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138 |
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139 <para> |
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140 Specifies a file that implements location and variable handlers in njs. |
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141 </para> |
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142 |
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143 </directive> |
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144 |
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145 |
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146 <directive name="js_path"> |
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147 <syntax> |
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148 <value>path</value></syntax> |
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149 <default/> |
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150 <context>http</context> |
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151 <appeared-in>0.3.0</appeared-in> |
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152 |
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153 <para> |
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154 Sets an additional path for njs modules. |
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155 </para> |
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156 |
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157 </directive> |
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158 |
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159 |
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160 <directive name="js_set"> |
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161 <syntax> |
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162 <value>$variable</value> <value>function</value></syntax> |
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163 <default/> |
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164 <context>http</context> |
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165 |
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166 <para> |
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167 Sets an njs function for the specified variable. |
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168 </para> |
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169 |
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170 </directive> |
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171 |
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172 </section> |
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173 |
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174 |
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175 <section id="arguments" name="Request Argument"> |
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176 |
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177 <para> |
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178 Each HTTP njs handler receives one argument, a request |
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179 <link doc="../njs/reference.xml" id="http">object</link>. |
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180 </para> |
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181 |
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182 </section> |
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183 |
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184 </module> |