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Long Tasks API

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

Concepts and Usage

TBD

Interfaces

PerformanceLongTaskTiming: Reports instances of long tasks.
TaskAttributionTiming: Returns information about the work involved in a long task and its associate frame context.

Specifications

Specification	Status	Comment
Long Tasks API 1	Working Draft	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub Update compatibility data on GitHub

`PerformanceLongTaskTiming`

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	58	?	?	?	?	?
`attribution`	58	?	?	?	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	58	58	?	?	?	?	?
`attribution`	58	58	?	?	?	?	?

`TaskAttributionTiming`

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	58	?	?	?	?	?
`containerId`	58	?	?	?	?	?
`containerName`	58	?	?	?	?	?
`containerSrc`	58	?	?	?	?	?
`containerType`	58	?	?	?	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	58	58	?	?	?	?	?
`containerId`	58	58	?	?	?	?	?
`containerName`	58	58	?	?	?	?	?
`containerSrc`	58	58	?	?	?	?	?
`containerType`	58	58	?	?	?	?	?

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Long_Tasks_API