Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

Next-Gen App & Browser
Testing Cloud

Trusted by 2 Mn+ QAs & Devs to accelerate their release cycles

Start free with Google Start free with Email

requestIdleCallback

This API provides a mechanism for executing JavaScript code in a browser context when the browser is idle. The API is designed to reduce the need for polling, allowing developers to queue up work to happen while the browser's resources are otherwise occupied.

Last updated on : 2023-03-20

Browser Versions

Edge

Firefox

Chrome

Safari

Opera

5.5 - 11

12 - 18

79 - 111

2 - 54

55 - 113

4 - 46

47 - 114

3.2 - 16.4

9.5 - 33

34 - 95

Fully Supported

Partially

No Support

Specifications

Cooperative Scheduling of Background Tasks # the-requestidlecallback-method

Syntax

window.requestIdleCallback(callback);
 window.requestIdleCallback(callback, options);

Browser Compatibility

requestIdleCallback on IE is not supported on any IE versions.

requestIdleCallback on Edge is fully supported on 79-111, and not supported on 12-18 Edge versions.

requestIdleCallback on Firefox is fully supported on 55-113, and not supported on 2-54 Firefox versions.

requestIdleCallback on Chrome is fully supported on 47-114, and not supported on 4-46 Chrome versions.

requestIdleCallback on Safari is not supported on any Safari versions.

requestIdleCallback on Opera is fully supported on 34-95, and not supported on 9.5-33 Opera versions.

requestIdleCallback on Safari on iOS is not supported on any Safari on iOS versions.

requestIdleCallback on Android Browser is fully supported on 97-111, and not supported on 2.1-4 Android Browser versions.

requestIdleCallback on Opera Mobile is fully supported on 64-73, and not supported on 10-12 Opera Mobile versions.

requestIdleCallback on Chrome for Android is fully supported on all Chrome for Android versions.

requestIdleCallback on Firefox for Android is fully supported on all Firefox for Android versions.

requestIdleCallback on Samsung Internet is fully supported on 5-20, and not supported on 4-4 Samsung Internet versions.

Browser Support for requestIdleCallback

requestIdleCallback on Chrome

requestIdleCallback on Safari

requestIdleCallback on Firefox

requestIdleCallback on Internet Explorer

requestIdleCallback on Opera

requestIdleCallback on Edge

References

Data sourced from

High

Overall Browser Compatibility Score

Note:requestIdleCallback shows a browser compatibility score of 75. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

Test on 3000+ browsers for requestIdleCallback & more

Test your website for requestIdleCallback and other web technologies. Get 100 FREE automation test minutes!

Test Now