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Check the Browser compatibility table carefully before using this in production.

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


PerformanceLongTaskTiming.attribution Read only
Returns a sequence of TaskAttributionTiming instances.


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

Browser Compatibility

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Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 58 ? ? ? ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 58 58 ? ? ? ? ?

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 Contributors to this page: jpmedley
 Last updated by: jpmedley,