Can I use
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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.

IE

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

Edge

  1. 12 - 18: Not supported
  2. 79 - 100: Supported
  3. 101: Supported

Firefox

  1. 2 - 52: Not supported
  2. 53 - 54: Disabled by default
  3. 55 - 99: Supported
  4. 100: Supported
  5. 101 - 102: Supported

Chrome

  1. 4 - 46: Not supported
  2. 47 - 100: Supported
  3. 101: Supported
  4. 102 - 104: Supported

Safari

  1. 3.1 - 13: Not supported
  2. 13.1 - 15.3: Disabled by default
  3. 15.4: Disabled by default
  4. TP: Disabled by default

Opera

  1. 9 - 33: Not supported
  2. 34 - 85: Supported
  3. 86: Supported
  4. 87: Supported

Safari on iOS

  1. 3.2 - 13.3: Not supported
  2. 13.4 - 15.3: Disabled by default
  3. 15.4: Disabled by default

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 101: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 101: Supported

Firefox for Android

  1. 100: Supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 15.0: Supported
  3. 16.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

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