Long Tasks API

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

Concepts and Usage



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


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

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

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 ? ? ? ? ?

Document Tags and Contributors

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