requestIdleCallback

- WD

API allowing the execution of JavaScript to be queued to run in idle browser time, either at the end of a frame or when the user is inactive. Also covers support for cancelIdleCallback. The API has similarities with requestAnimationFrame.

Chrome

  1. 4 - 46: Not supported
  2. 47 - 121: Supported
  3. 122: Supported
  4. 123 - 125: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 120: Supported
  3. 121: Supported

Safari

  1. 3.1 - 13: Not supported
  2. 13.1 - 17.2: Disabled by default
  3. 17.3: Disabled by default
  4. 17.4: Disabled by default
  5. TP: Supported

Firefox

  1. 2 - 52: Not supported
  2. 53 - 54: Disabled by default
  3. 55 - 122: Supported
  4. 123: Supported
  5. 124 - 126: Supported

Opera

  1. 9 - 33: Not supported
  2. 34 - 105: Supported
  3. 106: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 121: Supported

Safari on iOS

  1. 3.2 - 13.3: Not supported
  2. 13.4 - 17.2: Disabled by default
  3. 17.3: Disabled by default
  4. 17.4: Disabled by default

Samsung Internet

  1. 4: Not supported
  2. 5 - 22: Supported
  3. 23: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 121: Supported

Firefox for Android

  1. 122: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Supported
Resources:
MDN Web Docs - requestIdleCallback
Google Developers article
Shim