PerformanceObserver: disconnect() method

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.

Note: This feature is available in Web Workers.

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

Syntax

js
disconnect()

Parameters

None.

Return value

None (undefined).

Examples

Stopping a performance observer

The following example disconnects the performance observer to disable receiving any more performance entry events.

js
const observer = new PerformanceObserver((list, obj) => {
  list.getEntries().forEach((entry) => {
    // Process "measure" events
    // …
    // Disable additional performance events
    observer.disconnect();
  });
});
observer.observe({ entryTypes: ["mark", "measure"] });

Specifications

Specification
Performance Timeline
# dom-performanceobserver-disconnect

Browser compatibility