This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.
Note: This feature is only available in Web Workers.
The performance property of the WorkerGlobalScope interface returns a Performance object, which can be used to gather performance information about code running in the worker's scope.
Performance entries are per context. If you create a mark on a worker thread, you will not see it in the main thread or any other workers.
Note that only the following performance interfaces are available in worker contexts:
PerformancePerformanceEntryPerformanceMarkPerformanceMeasurePerformanceObserverPerformanceObserverEntryListPerformanceResourceTimingPerformanceServerTimingA Performance object offering access to performance and timing-related information for the context it is called on.
| Specification |
|---|
| High Resolution Time> # the-performance-attribute> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
performance |
6 | 12 | 7 | 15 | 8 | 18 | 7 | 14 | 9 | 1.0 | 4.4 | 9 |
worker_support |
30 | 14 | 34 | 17 | 11 | 30 | 34 | 18 | 11 | 2.0 | 4.4 | 11 |
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https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/performance