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.

Browser compatibility

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. 

Document Tags and Contributors

 Contributors to this page: jpmedley, teoli, rolfedh, AFBarstow
 Last updated by: jpmedley,