Mercurial > hg > nginx-site
annotate xml/en/docs/njs/index.xml @ 2505:ae52ac67048c
Linux packages: Added Alpine 3.11.
author | Konstantin Pavlov <thresh@nginx.com> |
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date | Tue, 25 Feb 2020 18:42:36 +0300 |
parents | 73d254c3376d |
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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="njs scripting language" |
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10 link="/en/docs/njs/index.html" |
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11 lang="en" |
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12 rev="28" |
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13 toc="no"> |
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14 |
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15 <section id="summary"> |
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16 |
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17 <para> |
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18 njs is a subset of the JavaScript language that allows |
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19 extending nginx functionality. |
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20 njs is created in compliance with |
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21 <link url="http://www.ecma-international.org/ecma-262/5.1/">ECMAScript 5.1</link> |
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22 (strict mode) with some |
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23 <link url="http://www.ecma-international.org/ecma-262/6.0/">ECMAScript 6</link> |
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24 and later extensions. |
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25 The compliance is still <link doc="compatibility.xml">evolving</link>. |
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26 </para> |
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27 |
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28 </section> |
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29 |
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30 |
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31 <section id="links"> |
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32 |
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33 <para> |
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34 <list type="bullet"> |
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35 |
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36 <listitem> |
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37 <link doc="install.xml"/> |
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38 </listitem> |
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39 |
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40 <listitem> |
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41 <link doc="changes.xml"/> |
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42 </listitem> |
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43 |
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44 <listitem> |
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45 <link doc="reference.xml"/> |
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46 </listitem> |
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47 |
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48 <listitem> |
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49 <link doc="examples.xml"/> |
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50 </listitem> |
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51 |
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52 <listitem> |
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53 <link doc="node_modules.xml"/> |
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54 </listitem> |
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55 |
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56 <listitem> |
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57 <link doc="compatibility.xml"/> |
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58 </listitem> |
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59 |
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60 <listitem> |
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61 <link doc="cli.xml"/> |
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62 </listitem> |
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63 |
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64 </list> |
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65 </para> |
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66 |
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67 <para> |
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68 <list type="bullet"> |
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69 |
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70 <listitem> |
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71 <link doc="../http/ngx_http_js_module.xml"> |
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72 ngx_http_js_module</link> |
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73 </listitem> |
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74 |
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75 <listitem> |
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76 <link doc="../stream/ngx_stream_js_module.xml"> |
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77 ngx_stream_js_module</link> |
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78 </listitem> |
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79 |
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80 </list> |
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81 </para> |
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82 |
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83 </section> |
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84 |
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85 |
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86 <section id="usecases" name="Use cases"> |
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87 |
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88 <para> |
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89 <list type="bullet"> |
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90 |
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91 <listitem> |
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92 Complex access control and security checks in njs |
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93 before a request reaches an upstream server |
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94 </listitem> |
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95 |
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96 <listitem> |
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97 Manipulating response headers |
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98 </listitem> |
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99 |
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100 <listitem> |
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101 Writing flexible asynchronous content handlers and filters |
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102 </listitem> |
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103 |
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104 </list> |
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105 See <link doc="examples.xml">examples</link> and |
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106 <link url="https://www.nginx.com/blog/tag/nginx-javascript-module/">blog posts</link> |
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107 for more njs use cases. |
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108 </para> |
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109 |
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110 </section> |
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111 |
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112 |
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113 <section id="example" name="Basic HTTP Example"> |
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115 <para> | |
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116 To use njs in nginx: |
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117 <list type="bullet"> |
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118 |
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119 <listitem> |
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120 <para> |
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121 <link doc="install.xml">install</link> njs scripting language |
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122 </para> |
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123 </listitem> |
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124 |
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125 <listitem id="hello_world"> |
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126 <para> |
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127 create an njs script file, for example, <path>hello_world.js</path>. |
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128 See <link doc="reference.xml">Reference</link> |
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129 for the list of njs properties and methods. |
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130 <example> |
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131 function hello(r) { |
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132 r.return(200, "Hello world!"); |
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133 } |
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134 </example> |
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135 </para> |
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136 </listitem> |
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137 |
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138 <listitem> |
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139 |
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140 <para> |
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141 in the <path>nginx.conf</path> file, enable |
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142 <link doc="../http/ngx_http_js_module.xml">ngx_http_js_module</link> module |
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143 and specify the |
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144 <link doc="../http/ngx_http_js_module.xml" id="js_include">js_include</link> |
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145 directive |
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146 with the <path>hello_world.js</path> script file: |
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147 <example> |
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148 load_module modules/ngx_http_js_module.so; |
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149 |
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150 events {} |
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151 |
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152 http { |
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153 js_include hello_world.js; |
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154 |
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155 server { |
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156 listen 8000; |
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157 |
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158 location / { |
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159 js_content hello; |
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160 } |
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161 } |
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162 } |
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163 |
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164 </example> |
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165 </para> |
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166 </listitem> |
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167 |
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168 </list> |
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169 There is also a standalone <link doc="cli.xml">command line</link> utility |
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170 that can be used independently of nginx for njs development and debugging. |
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171 </para> |
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172 |
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173 </section> |
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174 |
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175 |
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176 <section id="presentation" name="Presentation at nginx.conf 2018"> |
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177 |
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178 <para><video id="Jc_L6UffFOs" /></para> |
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179 |
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180 </section> |
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181 |
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182 </article> |