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+---
+title: RegExp.prototype.toSource()
+slug: Web/JavaScript/Reference/Global_Objects/RegExp/toSource
+tags:
+  - JavaScript
+  - Method
+  - Non-standard
+  - Prototype
+  - RegExp
+translation_of: Web/JavaScript/Reference/Global_Objects/RegExp/toSource
+---
+<p>{{JSRef("Global_Objects", "RegExp")}}{{ Non-standard_header() }}</p>
+
+<h2 id="Summary" name="Summary">概述</h2>
+
+<p>返回一个字符串,代表当前对象的源代码</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox"><code><var>regexObj</var>.toSource()
+</code></pre>
+
+<h2 id="Description" name="Description">描述</h2>
+
+<p><code>toSource</code>方法返回值如下:</p>
+
+<ul>
+ <li>对于内置的<code>RegExp</code>对象, <code>toSource</code> 如下字符串:</li>
+</ul>
+
+<pre class="brush: js">function RegExp() {
+    [native code]
+}
+</pre>
+
+<ul>
+ <li>对于一个<code>RegExp实例</code>, <code>toSource返回代表该正则的字符串.</code></li>
+</ul>
+
+<p>该方法通常由JavaScript内部隐含调用,而不会明确的出现在用户代码中.</p>
+
+<h2 id="See_Also" name="See_Also">相关链接</h2>
+
+<p><a href="/zh-cn/JavaScript/Reference/Global_Objects/Object/toSource" title="zh-cn/JavaScript/Reference/Global_Objects/Object/toSource">Object.prototype.toSource</a></p>