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




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
var observer2 = new PerformanceObserver(perf_observer);
observer2.observe({entryTypes: ["measure"]});


Specification Status Comment
Performance Timeline Level 2
The definition of 'disconnect()' in that specification.
Candidate Recommendation Initial definition of disconnect() method.

Browser compatibility

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 52 57 (57) No support 39 No support
Available on workers 62 (Yes) (Yes) 49 (Yes)
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 52 57.0 (57) No support


No support
Available on workers No support 62 (Yes) (Yes)



Document Tags and Contributors

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