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---
title: 'BroadcastChannel: messageerror event'
slug: Web/API/BroadcastChannel/messageerror_event
translation_of: Web/API/BroadcastChannel/messageerror_event
---
<div>{{APIRef}}</div>
<p>当频道收到一条无法反序列化的消息时会在 {{domxref('BroadcastChannel')}} 对象上触发 <code>messageerror</code> 事件。</p>
<table class="properties">
<tbody>
<tr>
<th scope="row">Bubbles</th>
<td>No</td>
</tr>
<tr>
<th scope="row">Cancelable</th>
<td>No</td>
</tr>
<tr>
<th scope="row">Interface</th>
<td>{{domxref("MessageEvent")}}</td>
</tr>
<tr>
<th scope="row">Event handler property</th>
<td><code><a href="/en-US/docs/Web/API/BroadcastChannel/onmessageerror">onmessageerror</a></code></td>
</tr>
</tbody>
</table>
<h2 id="示例">示例</h2>
<p>以下代码使用 <code><a href="/en-US/docs/Web/API/EventTarget/addEventListener">addEventListener</a></code> 来监听消息和错误：</p>
<pre class="brush: js">const channel = new BroadcastChannel('example-channel');
channel.addEventListener('message', (event) => {
received.textContent = event.data;
});
channel.addEventListener('messageerror', (event) => {
console.error(event);
});</pre>
<p>使用 <code><a href="/en-US/docs/Web/API/BroadcastChannel/onmessage">onmessage</a></code> 和 <code><a href="/en-US/docs/Web/API/BroadcastChannel/onmessageerror">onmessageerror</a></code> 事件处理程序来实现相同效果：</p>
<pre class="brush: js">const channel = new BroadcastChannel('example-channel');
channel.onmessage = (event) => {
received.textContent = event.data;
};
channel.onmessageerror = (event) => {
console.log(event);
};
</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>
</tr>
<tr>
<td>{{SpecName('HTML WHATWG', 'indices.html#event-messageerror')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{Compat("api.BroadcastChannel.messageerror_event")}}</p>
<h2 id="另见">另见</h2>
<ul>
<li>相关事件：<code><a href="/docs/Web/API/BroadcastChannel/message_event">message</a></code></li>
</ul>
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