---
title: GlobalEventHandlers.onloadedmetadata
slug: Web/API/GlobalEventHandlers/onloadedmetadata
tags:
  - 事件处理器
  - 全局事件处理器
  - 参考
  - 属性
translation_of: Web/API/GlobalEventHandlers/onloadedmetadata
---
<div>{{ ApiRef("HTML DOM") }}</div>

<p>{{domxref("GlobalEventHandlers")}} mixin的<strong><code>onloadedmetadata</code></strong>属性是处理{{event("loadedmetadata")}}事件的{{domxref("EventHandler")}}。</p>

<p><code>loadedmetadata</code>事件在元数据（metadata）被加载完成后触发。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox"><em><var>element</var></em>.onloadedmetadata = <em>handlerFunction</em>;
var <em>handlerFunction</em> = <em><var>element</var></em>.onloadedmetadata;
</pre>

<p><code>handlerFunction</code>应当是<code>null</code>或是由<a href="/en-US/docs/Web/JavaScript/Reference/Functions" title="/en-US/docs/JavaScript/Reference/Functions_and_function_scope">JavaScript函数</a>声明的事件handler。</p>

<h2 id="规范">规范</h2>

<table class="spectable standard-table">
 <tbody>
  <tr>
   <th scope="col">规范</th>
   <th scope="col">状态</th>
   <th scope="col">备注</th>
  </tr>
  <tr>
   <td>{{SpecName('HTML WHATWG','#handler-onloadedmetadata','onloadedmetadata')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</td>
   <td></td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div class="hidden">该页面上的兼容性表是由结构化数据生成的。如果您想对数据做出贡献，请查看 <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> ，并向我们发送一个pull request。</div>

<p>{{Compat("api.GlobalEventHandlers.onloadedmetadata")}}</p>

<h2 id="参考">参考</h2>

<ul>
 <li>{{event("loadedmetadata")}}</li>
 <li><a href="/en-US/docs/Web/Guide/Events/Event_handlers" title="/en-US/docs/Web/Guide/DOM/Events/Event_handlers">DOM事件句柄</a></li>
</ul>