Web/API/PerformanceLongTaskTiming

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The PerformanceLongTaskTiming interface of the the Long Tasks API reports instances of long tasks.

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Properties

PerformanceLongTaskTiming.attribution Read only

Returns a sequence of TaskAttributionTiming instances.

Specifications

Specification	Status	Comment
Long Tasks API 1The definition of 'PerformanceLongTaskTiming' in that specification.	Working Draft	Initial definition.

Browser Compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
PerformanceLongTaskTiming Experimental'	Chrome Full support 58	Edge Full support ≤79	Firefox No support No Notes' No support No Notes' Notes' See bug 1348405.	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support 58	Chrome Android Full support 58	Firefox Android No support No Notes' No support No Notes' Notes' See bug 1348405.	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support 7.0
attribution Experimental'	Chrome Full support 58	Edge Full support ≤79	Firefox No support No	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support 58	Chrome Android Full support 58	Firefox Android No support No	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support 7.0

Legend

Full support  

Full support

No support  

No support

Compatibility unknown  

Compatibility unknown

Experimental. Expect behavior to change in the future.'

Experimental. Expect behavior to change in the future.

See implementation notes.'

See implementation notes.

PerformanceLongTaskTiming by Mozilla Contributors is licensed under CC-BY-SA 2.5.