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+---
+title: HTMLMediaElement.load()
+slug: Web/API/HTMLMediaElement/load
+translation_of: Web/API/HTMLMediaElement/load
+---
+<div>{{APIRef("HTML DOM")}}</div>
+
+<p><span class="seoSummary"> <code><strong>load()</strong></code> 方法重置媒体成初始化状态，选择一个播放源， 为载入媒体重新播放做准备。</span> 媒体预播放的信息是由 <span class="seoSummary"><code><strong>preload</strong></code></span> 这个参数决定的。</p>
+
+<p>此方法只在对媒体做动态更改时管用，要么更改<code>src</code>属性，要么添加或删除<code>source</code> 。 <code>load()</code> 将会重置元素重新扫描可用的源，从而让改动生效。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><em>mediaElement</em>.load();</pre>
+
+<h3 id="参数">参数</h3>
+
+<p>None.</p>
+
+<h3 id="返回值">返回值</h3>
+
+<p><code>undefined</code>.</p>
+
+<h2 id="用法">用法</h2>
+
+<p>调用 <code>load()</code> 会使媒体上所有正在进行的操作中止，然后根据 <code>audio</code> 或者 <code>video</code> 元素的 <code>src</code> 或者 <code>source</code> 属性里寻找合适的播放源并重新加载媒体内容。 更多查看  <a href="https://wiki.developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content#Supporting_multiple_formats" title="And that's a wrap; we hope you had fun playing with video and audio in web pages! In the next article, we'll look at other ways of embedding content on the Web, using technologies like &lt;iframe> and &lt;object>.">Supporting multiple formats</a> 和 <a href="https://wiki.developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content" title="And that's a wrap; we hope you had fun playing with video and audio in web pages! In the next article, we'll look at other ways of embedding content on the Web, using technologies like &lt;iframe> and &lt;object>.">Video and audio content</a> 。</p>
+
+<p>The process of aborting any ongoing activities will cause any outstanding {{jsxref("Promise")}}s returned by {{domxref("HTMLMediaElement.play", "play()")}} being resolved or rejected as appropriate based on their status before the loading of new media can begin. Pending play promises are aborted with an <code>"AbortError"</code> {{domxref("DOMException")}}.</p>
+
+<p>在load过程中 合适的事件会发生并通知给媒体本身，包括：</p>
+
+<ul>
+ <li>如果已经是 <code>load</code> 过了，则 <code>abort</code> 事件发送给媒体。</li>
+ <li>If the element has already been initialized with media, the <strong>{{event("emptied")}}</strong> event is sent.</li>
+ <li>如果重置播放位置到开始，通常指修改播放位置，<strong>timeupdate</strong> 事件触发。</li>
+ <li>当已经选择了源并且已经准备加载内容了，<strong>loadstart</strong> 事件触发。</li>
+ <li>之前的几点，媒体加载并且事件已经送达</li>
+</ul>
+
+<h2 id="例子">例子</h2>
+
+<p>例子中有一个 {{HTMLElement("video")}} 元素然后重置它 <code>load()</code>.</p>
+
+<pre class="brush: js">var mediaElem = document.querySelector("video");
+mediaElem.load();
+</pre>
+
+<h2 id="说明">说明</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', "media.html#dom-media-load", "HTMLMediaElement.load()")}}</td>
+   <td>{{Spec2('HTML WHATWG')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('HTML5 W3C', "semantics-embedded-content.html#dom-htmlmediaelement-load", "HTMLMediaElement.load()")}}</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>{{Compat("api.HTMLMediaElement.load")}}</p>