requestIdleCallback()
Limited availability
The requestIdleCallback() API queues a function that runs in idle browser time, either at the end of a frame or when the user is inactive. Also known as the background tasks API.
Learn more
Specifications
- requestIdleCallback(), from Web Performance Working Group (W3C).
Browser support (view on caniuse.com)
- Chrome 47 Released on 2015-12-01
- Chrome Android 47 Released on 2015-12-02
- Edge 79 Released on 2020-01-15
- Firefox 55 Released on 2017-08-08
- Firefox for Android 55 Released on 2017-08-08
- Safari ❌ See webkit.org/b/164193 webkit.org/b/285049
- Safari on iOS ❌ See webkit.org/b/164193 webkit.org/b/285049
Baseline availability blocked since January 2020 by Safari (66 months)
Usage (according to Chrome Platform Status)
~44.086% of page loads. More data at chromestatus.
Web Platform Tests (WPT)
View the latest WPT test results for this featureView as JSON | Edit this feature | Report an issue | Web-features entry: source, dist