---
title: RegExp.prototype.source
slug: Web/JavaScript/Reference/Global_Objects/RegExp/source
tags:
  - JavaScript
  - Property
  - Prototype
  - Reference
  - RegExp
  - Regular Expressions
translation_of: Web/JavaScript/Reference/Global_Objects/RegExp/source
---
<div>{{JSRef("Global_Objects", "RegExp")}}</div>

<h2 id="Summary" name="Summary">概述</h2>

<p><strong><code>source</code></strong> 属性返回一个值为当前正则表达式对象的模式文本的字符串，该字符串不会包含正则字面量两边的斜杠以及任何的标志字符。</p>

<h2 id="Examples" name="Examples">示例</h2>

<pre class="brush: js">var regex = /fooBar/ig;

console.log(regex.source); // "fooBar"，不包含 /.../ 和 "ig"。
</pre>

<h2 id="Specifications" name="Specifications">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">规范名称</th>
   <th scope="col">规范状态</th>
   <th scope="col">备注</th>
  </tr>
  <tr>
   <td>ECMAScript 3rd Edition.</td>
   <td>Standard</td>
   <td><code>source</code> 是正则对象自身的数据属性</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-15.10.7.1', 'RegExp.prototype.source')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-get-regexp.prototype.source', 'RegExp.prototype.source')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td><code>source</code> 成为了正则对象原型上的一个访问器属性</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>

<div>{{CompatibilityTable}}</div>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also" name="See_also">相关链接</h2>

<ul>
 <li>{{jsxref("RegExp.prototype.flags")}}</li>
</ul>