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---
title: HTMLMediaElement.loop
slug: Web/API/HTMLMediaElement/loop
translation_of: Web/API/HTMLMediaElement/loop
---
<div>{{APIRef("HTML DOM")}}</div>
<div> </div>
<div><strong><code>HTMLMediaElement.loop</code></strong> 属性是 HTML 标签 {{htmlattrxref("loop", "video")}} 属性的映射，它决定了媒体元素播放结束时是否重新开始。</div>
<div> </div>
<div class="note">
<p>原文：The <strong><code>HTMLMediaElement.loop</code></strong> property reflects the {{htmlattrxref("loop", "video")}} HTML attribute, which controls whether the media element should start over when it reaches the end.</p>
</div>
<h2 id="Syntax" name="Syntax">语法</h2>
<pre class="brush: js">var <em>loop</em> = <em>video</em>.loop;
<em>audio</em>.loop = true;
</pre>
<h3 id="返回值">返回值</h3>
<p>一个布尔值 {{domxref("Boolean")}}.</p>
<h2 id="示例">示例</h2>
<pre class="brush: js">var obj = document.createElement('video');
obj.loop = true; // true
</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('HTML WHATWG', "the-video-element.html#htmlmediaelement", "HTMLMediaElement.loop")}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td>No change from {{SpecName('HTML5 W3C')}}</td>
</tr>
<tr>
<td>{{SpecName('HTML5 W3C', "embedded-content-0.html#htmlmediaelement", "HTMLMediaElement.loop")}}</td>
<td>{{Spec2('HTML5 W3C')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{ CompatibilityTable() }}</p>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Edge</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td><code>loop</code> property</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatGeckoDesktop("11.0")}}</td>
<td>{{CompatIE("9")}}</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>Edge</th>
<th>Firefox Mobile (Gecko)</th>
<th>Firefox OS (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td><code>loop</code> property</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatGeckoMobile("11.0")}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="See_Also" name="See_Also">相关链接</h2>
<ul>
<li>The interface defining it, {{domxref("HTMLMediaElement")}}.</li>
</ul>
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