PeformanceObserver.disconnect()

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The disconnect() method of the PerformanceObserver interface is used to stop the performance observer from receiving any performance entry events.

Syntax

observer.disconnect();

Example

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"]});

Specifications

Specification	Status	Comment
Performance Timeline Time Level 2 The definition of 'disconnect()' in that specification.	Editor's Draft	Initial definition of `disconnect()` method.

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	52.0	49 (49)^[1]	No support	39	No support

Feature	Android	Android Webview	Firefox Mobile (Gecko)	Firefox OS	IE Phone	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	No support	49 (49)^[1]	No support	No support	39	No support	52.0

[1] Only activated in Nightly builds. Controlled by the dom.enable_performance_observer preference.

PeformanceObserver.disconnect()

Syntax

Example

Specifications

Browser compatibility

Document Tags and Contributors