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+---
+title: Date.prototype.toJSON()
+slug: Web/JavaScript/Reference/Global_Objects/Date/toJSON
+translation_of: Web/JavaScript/Reference/Global_Objects/Date/toJSON
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>toJSON()</code></strong> 方法返回 {{jsxref("Date")}} 对象的字符串形式。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/date-tojson.html")}}</div>
+
+
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox"><code><var>dateObj</var>.toJSON()</code>
+</pre>
+
+<h2 id="Description" name="Description">描述</h2>
+
+<p>{{jsxref("Date")}} 实例引用一个具体的时间点。 调用 <code>toJSON()</code> 返回一个 JSON 格式字符串(使用 {{jsxref("Date.prototype.toISOString()", "toISOString()")}})，表示该日期对象的值。默认情况下，这个方法常用于 {{Glossary("JSON")}}序列化{{jsxref("Date")}}对象。</p>
+
+<h2 id="Example" name="Example">样例</h2>
+
+<h3 id="Example:_Using_toJSON" name="Example:_Using_toJSON"><code>toJSON()</code> 样例</h3>
+
+<pre class="brush:js">var date = new Date();
+console.log(date); //Thu Nov 09 2017 18:54:04 GMT+0800 (中国标准时间)
+
+var jsonDate = (date).toJSON();
+console.log(jsonDate); //"2017-11-09T10:51:11.395Z"
+
+var backToDate = new Date(jsonDate);
+console.log(backToDate); //Thu Nov 09 2017 18:54:04 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">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">说明</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.9.5.44', 'Date.prototype.toJSON')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td>首次定义，于 JavaScript 1.8.5 版本实现。</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-date.prototype.tojson', 'Date.prototype.toJSON')}}</td>
+   <td>{{Spec2('ES6')}}</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.toJSON")}}</p>
+</div>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{jsxref("Date.prototype.toLocaleDateString()")}}</li>
+ <li>{{jsxref("Date.prototype.toTimeString()")}}</li>
+ <li>{{jsxref("Date.prototype.toUTCString()")}}</li>
+</ul>