PerformanceObserver.disconnect()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
PerformanceObserver 接口的 disconnect() 方法用于阻止性能观察者接收任何 性能条目 事件。
语法
js
disconnect()
参数
无。
返回值
无（undefined）。
示例
js
var observer = new PerformanceObserver(function (list, obj) {
var entries = list.getEntries();
for (var i = 0; i < 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"] });
规范
| Specification |
|---|
| Performance Timeline # dom-performanceobserver-disconnect |