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---
title: String.prototype.toSource()
slug: Web/JavaScript/Reference/Global_Objects/String/toSource
translation_of: Web/JavaScript/Reference/Global_Objects/String/toSource
---
<div>{{JSRef}} {{non-standard_header}}</div>
<p><strong><code>toSource()</code></strong> 方法返回一个代表对象的源代码。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><code>String.toSource()
<var>str</var>.toSource()
</code></pre>
<h2 id="描述">描述</h2>
<p><code>toSource()</code> 方法返回以下值：</p>
<p>对于内建对象 {{jsxref("String")}} , <code>toSource()返回以下值说明源码不可用：</code></p>
<pre class="brush: js">function String() {
[native code]
}
</pre>
<p>对于实例{{jsxref("String")}} 或者字符串, <code>toSource()</code> 返回一个字符串表示源码.</p>
<p>这种方法通常在内部被JavaScript调用，而不是明确的代码。.</p>
<h2 id="规范">规范</h2>
<p>不属于任何标准. 在 JavaScript 1.3实现了.</p>
<h2 id="浏览器适配">浏览器适配</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>{{CompatUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</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>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="参见">参见</h2>
<ul>
<li>{{jsxref("Object.prototype.toSource()")}}</li>
</ul>
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