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---
title: Date.prototype.toString()
slug: Web/JavaScript/Reference/Global_Objects/Date/toString
translation_of: Web/JavaScript/Reference/Global_Objects/Date/toString
---
<div>{{JSRef}}</div>

<p><code><strong>toString()</strong></code> 方法返回一个字符串,表示该{{jsxref("Date")}}对象。</p>

<div>{{EmbedInteractiveExample("pages/js/date-tostring.html")}}</div>



<h2 id="Syntax" name="Syntax">语法</h2>

<pre class="syntaxbox"><var>dateObj</var>.toString()</pre>

<h3 id="Parameters" name="Parameters">参数</h3>

<p></p>

<h2 id="Description" name="Description">描述</h2>

<p>{{jsxref("Date")}}对象覆盖了 {{jsxref("Object")}} 对象的 <code>toString() </code>方法;它不是继承自 {{jsxref("Object.prototype.toString()")}}。对于  {{jsxref("Date")}} 对象,<code>toString()</code> 方法返回一个表示该对象的字符串。</p>

<p><code>toString</code> 方法总是返回一个美式英语日期格式的字符串。</p>

<p>当一个日期对象被用来作为文本值或用来进行字符串连接时,<code>toString</code> 方法会被自动调用。</p>

<p><code>toString() </code>是通用函数。如果不是{{jsxref("Date")}}实例,则 返回"Invalid Date"。</p>

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

<h3 id="Example:_Using_toString" name="Example:_Using_toString">例子: 使用 <code>toString</code> 方法</h3>

<p>下例把一个{{jsxref("Date")}}对象的 <code>toString</code> 返回值赋给 <code>myVar:</code></p>

<pre class="brush:js">var x = new Date();
myVar = x.toString(); // 把类似于下面格式的值赋给 myVar,
// Fri Apr 26 2019 11:46:17 GMT+0800 (中国标准时间)
</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('ES1')}}</td>
   <td>{{Spec2('ES1')}}</td>
   <td>Initial definition. Implemented in JavaScript 1.0.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-15.9.5.2', 'Date.prototype.toLocaleTimeString')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-date.prototype.tostring', 'Date.prototype.toString')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-date.prototype.tostring', 'Date.prototype.toString')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>
<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>

<p>{{Compat("javascript.builtins.Date.toString")}}</p>
</div>

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

<ul>
 <li>{{jsxref("Object.prototype.toString()")}}</li>
 <li>{{jsxref("Date.prototype.toDateString()")}}</li>
 <li>{{jsxref("Date.prototype.toLocaleString()")}}</li>
 <li>{{jsxref("Date.prototype.toTimeString()")}}</li>
</ul>