Profiler: stop() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The stop() method of the Profiler interface stops the profiler and returns a Promise which resolves to the profile itself.

Syntax

js
stop()

Parameters

None.

Return value

A Promise that resolves to an object containing the profile data. The format and interpretation of this object is described in Profile anatomy and format.

Examples

Recording a profile

The following code profiles the doWork() operation, and logs the result.

js
const profiler = new Profiler({ sampleInterval: 10, maxBufferSize: 10000 });

doWork();

const profile = await profiler.stop();
console.log(JSON.stringify(profile));

Specifications

Specification
JS Self-Profiling API
# dom-profiler-stop

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
stop
Experimental
Chrome – Full support
Chrome 94 (Release date: 2021-09-21)
footnote Full support
Edge – Full support
Edge 94 (Release date: 2021-09-24)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 80 (Release date: 2021-10-05)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 94 (Release date: 2021-09-21)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 66 (Release date: 2021-12-15)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 17 (Release date: 2022-05-04)
footnote Full support
WebView Android – Full support
WebView Android 94 (Release date: 2021-09-21)
footnote Full support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.