---
title: PeformanceObserver.disconnect()
slug: Web/API/PerformanceObserver/disconnect
translation_of: Web/API/PerformanceObserver/disconnect
---
<div>{{APIRef("Performance Timeline API")}}</div>

<div> </div>

<p>{{domxref('PerformanceObserver')}} 接口的 <strong><code>disconnect()</code></strong> 方法用于阻止性能观察者接收任何 {{domxref("PerformanceEntry","性能条目", '', 'true')}} 事件。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox"><em>performanceObserver</em>.disconnect();
</pre>

<h2 id="例子">例子</h2>

<pre class="brush: js">var observer = new PerformanceObserver(function(list, obj) {
  var entries = list.getEntries();
  for (var i=0; i &lt; entries.length; i++) {
    // Process "mark" and "frame" events
  }
});
observer.observe({entryTypes: ["mark", "frame"]});

function perf_observer(list, observer) {
  // Process the "measure" event
  // ...
  // Disable additional performance events
  observer.disconnect();
}
var observer2 = new PerformanceObserver(perf_observer);
observer2.observe({entryTypes: ["measure"]});
</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('Performance Timeline Level 2', '#dom-performanceobserver-disconnect', 'disconnect()')}}</td>
   <td>{{Spec2('Performance Timeline Level 2')}}</td>
   <td><code>disconnect()</code> 方法的初始定义。</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>


<p>{{Compat("api.PerformanceObserver.disconnect")}}</p>
</div>