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Documented Object methods, exponential and hex literals in njs.
author Yaroslav Zhuravlev <yar@nginx.com>
date Tue, 27 Jun 2017 16:38:01 +0300
parents 182bbf9034c4
children af51ec6b5489
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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="About nginScript"
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10 link="/en/docs/njs_about.html"
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11 lang="en"
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12 rev="10">
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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 nginScript is a subset of the JavaScript language that allows
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18 implementing location and variable handlers in
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19 <link doc="http/ngx_http_js_module.xml">http</link> and
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20 <link doc="stream/ngx_stream_js_module.xml">stream</link>.
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21 nginScript is created in compliance with
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22 <link url="http://www.ecma-international.org/ecma-262/5.1/">ECMAScript 5.1</link>
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23 with some
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24 <link url="http://www.ecma-international.org/ecma-262/6.0/">ECMAScript 6</link>
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25 extensions.
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26 The compliance is still evolving.
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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="supported" name="What is currently supported">
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33
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34 <para>
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35 <list type="bullet">
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36
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37 <listitem>
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38 Boolean values, numbers, strings, objects, arrays,
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39 functions, and regular expressions
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40 </listitem>
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41
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42 <listitem>
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43 ES5.1 operators, ES7 exponentiation operators
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44 </listitem>
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45
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46 <listitem>
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47 ES5.1 statements: <literal>var</literal>, <literal>if</literal>,
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48 <literal>else</literal>, <literal>switch</literal>, <literal>for</literal>,
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49 <literal>for in</literal>, <literal>while</literal>,
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50 <literal>do while</literal>, <literal>break</literal>,
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51 <literal>continue</literal>, <literal>return</literal>, <literal>try</literal>,
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52 <literal>catch</literal>, <literal>throw</literal>, <literal>finally</literal>
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53 </listitem>
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54
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55 <listitem>
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56 ES6 <literal>Number</literal> and
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57 <literal>Math</literal> properties and methods
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58 </listitem>
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59
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60 <listitem>
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61 <literal>String</literal> methods:
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62 <list type="bullet">
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63
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64 <listitem>
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65 ES5.1:
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66 <literal>fromCharCode</literal>, <literal>concat</literal>,
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67 <literal>slice</literal>, <literal>substring</literal>,
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68 <literal>substr</literal>, <literal>charAt</literal>,
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69 <literal>charCodeAt</literal>, <literal>indexOf</literal>,
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70 <literal>lastIndexOf</literal>, <literal>toLowerCase</literal>,
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71 <literal>toUpperCase</literal>, <literal>trim</literal>,
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72 <literal>search</literal>, <literal>match</literal>, <literal>split</literal>,
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73 <literal>replace</literal>
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74 </listitem>
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75
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76 <listitem>
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77 ES6:
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78 <literal>fromCodePoint</literal>, <literal>codePointAt</literal>,
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79 <literal>includes</literal>, <literal>startsWith</literal>,
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80 <literal>endsWith</literal>, <literal>repeat</literal>
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81 </listitem>
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82
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83 <listitem>
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84 non-standard:
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85 <literal>fromUTF8</literal>, <literal>toUTF8</literal>,
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86 <literal>fromBytes</literal>, <literal>toBytes</literal>
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87 </listitem>
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88 </list>
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89
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90 </listitem>
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91
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92 <listitem>
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93 <literal>Object</literal> methods:
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94 <list type="bullet">
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95 <listitem>
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96 ES5.1:
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97 <literal>create</literal> (support without properties list),
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98 <literal>keys</literal>,
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99 <literal>defineProperty</literal>,
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100 <literal>defineProperties</literal>,
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101 <literal>getOwnPropertyDescriptor</literal>,
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102 <literal>getPrototypeOf</literal>,
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103 <literal>hasOwnProperty</literal>,
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104 <literal>isPrototypeOf</literal>,
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105 <literal>preventExtensions</literal>,
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106 <literal>isExtensible</literal>,
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107 <literal>freeze</literal>,
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108 <literal>isFrozen</literal>,
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109 <literal>seal</literal>,
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110 <literal>isSealed</literal>
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111 </listitem>
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112 </list>
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113
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114 </listitem>
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115
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116 <listitem>
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117 <literal>Array</literal> methods:
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118 <list type="bullet">
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119 <listitem>
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120 ES5.1:
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121 <literal>isArray</literal>, <literal>slice</literal>, <literal>splice</literal>,
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122 <literal>push</literal>, <literal>pop</literal>, <literal>unshift</literal>,
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123 <literal>shift</literal>, <literal>reverse</literal>, <literal>sort</literal>,
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124 <literal>join</literal>, <literal>concat</literal>, <literal>indexOf</literal>,
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125 <literal>lastIndexOf</literal>, <literal>forEach</literal>,
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126 <literal>some</literal>, <literal>every</literal>, <literal>filter</literal>,
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127 <literal>map</literal>, <literal>reduce</literal>,
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128 <literal>reduceRight</literal>
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129 </listitem>
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130
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131 <listitem>
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132 ES6:
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133 <literal>of</literal>, <literal>fill</literal>, <literal>find</literal>,
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134 <literal>findIndex</literal>
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135 </listitem>
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136
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137 <listitem>
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138 ES7: <literal>includes</literal>
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139 </listitem>
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140 </list>
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141
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142 </listitem>
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143
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144 <listitem>
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145 ES5.1 <literal>Function</literal> methods:
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146 <literal>call</literal>, <literal>apply</literal>, <literal>bind</literal>
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147 </listitem>
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148
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149 <listitem>
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150 ES5.1 <literal>RegExp</literal> methods:
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151 <literal>test</literal>, <literal>exec</literal>
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152 </listitem>
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153
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154 <listitem>
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155 ES5.1 <literal>Date</literal> methods
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156 </listitem>
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157
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158 <listitem>
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159 ES5.1 global functions:
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160 <literal>isFinite</literal>, <literal>isNaN</literal>,
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161 <literal>parseFloat</literal>, <literal>parseInt</literal>,
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162 <literal>decodeURI</literal>, <literal>decodeURIComponent</literal>,
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163 <literal>encodeURI</literal>, <literal>encodeURIComponent</literal>
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164 </listitem>
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165
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166 </list>
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167 </para>
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168
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169 </section>
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170
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171
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172 <section id="not_supported" name="What is not supported yet">
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173
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174 <para>
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175 <list type="bullet">
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176
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177 <listitem>
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178 ES6 <literal>let</literal> and <literal>const</literal> declarations
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179 </listitem>
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180
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181 <listitem>
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182 labels
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183 </listitem>
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184
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185 <listitem>
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186 <literal>arguments</literal> array
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187 </listitem>
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188
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189 <listitem>
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190 <literal>eval</literal> function
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191 </listitem>
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192
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193 <listitem>
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194 <literal>JSON</literal> object
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195 </listitem>
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196
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197 <listitem>
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198 <literal>Error</literal> object
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199 </listitem>
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200
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201 <listitem>
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202 <literal>setTimeout</literal>, <literal>setInterval</literal>,
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203 <literal>setImmediate</literal> functions
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204 </listitem>
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205
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206 <listitem>
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207 non-integer fractions (<literal>.235</literal>),
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208 binary (<literal>0b0101</literal>),
2004
d1a1253a570e Documented Object methods, exponential and hex literals in njs.
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209 octal (<literal>0o77</literal>) literals
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210 </listitem>
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211
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212 </list>
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213 </para>
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214
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215 </section>
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216
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217
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218 <section id="install" name="Download and install">
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219
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220 <para>
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221 nginScript is available in two modules:
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222 <list type="bullet">
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223
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224 <listitem>
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225 <link doc="http/ngx_http_js_module.xml">ngx_http_js_module</link>
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226 </listitem>
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227
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228 <listitem>
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229 <link doc="stream/ngx_stream_js_module.xml">ngx_stream_js_module</link>
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230 </listitem>
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231
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232 </list>
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233 Both modules are not built by default,
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234 they should be either compiled from the sources
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235 or installed as a Linux package.
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236 </para>
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237
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238
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239 <section id="install_package" name="Installing as a Linux package">
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240 <para>
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241 For Linux, nginScript modules
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242 <link doc="../linux_packages.xml" id="dynmodules">packages</link> can be used:
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243 <list type="bullet">
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244
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245 <listitem>
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246 <literal>nginx-module-njs</literal> — nginScript
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247 <link doc="ngx_core_module.xml" id="load_module">dynamic</link> modules
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248 </listitem>
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249
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250 <listitem>
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251 <literal>nginx-module-njs-dbg</literal> — debug symbols for the
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252 <literal>nginx-module-njs</literal> package
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253 </listitem>
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254
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255 </list>
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256 </para>
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257
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258 </section>
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259
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260
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261 <section id="install_sources" name="Building from the sources">
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262
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263 <para>
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264 The <link url="http://hg.nginx.org/njs">repository</link>
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265 with nginScript sources can be cloned with the following command:
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266 (requires <link url="https://www.mercurial-scm.org">Mercurial</link> client):
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267 <example>
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268 hg clone http://hg.nginx.org/njs
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269 </example>
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270 Then the modules should be compiled using the
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271 <literal>--add_module</literal> configuration parameter:
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272 <example>
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273 ./configure --add-module=<value>path-to-njs</value>/nginx
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274 </example>
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275 The modules can also be built as
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276 <link doc="ngx_core_module.xml" id="load_module">dynamic</link>:
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277 <example>
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278 ./configure --add-dynamic_module=<value>path-to-njs</value>/nginx
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279 </example>
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280 </para>
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281
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282 </section>
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283
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284 </section>
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285
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286 </article>