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---
title: 'WebSocket: 错误事件'
slug: Web/API/WebSocket/error_event
translation_of: Web/API/WebSocket/error_event
---
<div>{{APIRef}}</div>
<p>当<code>websocket</code>的连接由于一些错误事件的发生 (例如无法发送一些数据)而被关闭时，一个<code>error</code>事件将被引发.</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("Event")}}</td>
</tr>
<tr>
<th scope="row">Event handler property</th>
<td>{{ domxref("WebSocket.onerror","onerror")}}</td>
</tr>
</tbody>
</table>
<h2 id="示例">示例</h2>
<pre class="brush: js notranslate">// Create WebSocket connection
// 创建一个 WebSocket 连接
const socket = new WebSocket('ws://localhost:8080');
// Listen for possible errors
// 监听可能发生的错误
socket.addEventListener('error', function (event) {
console.log('WebSocket error: ', event);
});</pre>
<h2 id="标准">标准</h2>
<table class="standard-table">
<thead>
<tr>
<th>Specification</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName("HTML WHATWG", "web-sockets.html#event-error", "WebSocket error")}}</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.WebSocket.error_event")}}</p>
<h2 id="查看更多">查看更多</h2>
<ul>
<li><a href="/en-US/docs/Web/API/WebSocket/close_event">WebSocket: close event</a></li>
<li><a href="/en-US/docs/Web/API/WebSocket/message_event">WebSocket: message event</a></li>
<li><a href="/en-US/docs/Web/API/WebSocket/open_event">WebSocket: open event</a></li>
<li><a href="/en-US/docs/WebSockets/Writing_WebSocket_client_applications">Writing WebSocket client applications</a></li>
</ul>
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