Can I use
?

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 - 137: Supported
  3. ✅ 138: Supported
  4. ✅ 139 - 141: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 137: Supported
  3. ✅ 138: Supported

Safari

  1. ❌ 3.1 - 13: Not supported
  2. ❌ 13.1 - 18.4: Disabled by default
  3. ❌ 18.5: Disabled by default
  4. ❌ 26.0: Disabled by default
  5. ✅ TP: Supported

Firefox

  1. ❌ 2 - 52: Not supported
  2. ❌ 53 - 54: Disabled by default
  3. ✅ 55 - 139: Supported
  4. ✅ 140: Supported
  5. ✅ 141 - 143: Supported

Opera

  1. ❌ 9 - 33: Not supported
  2. ✅ 34 - 116: Supported
  3. ✅ 117: Supported

IE

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

Chrome for Android

  1. ✅ 138: Supported

Safari on iOS

  1. ❌ 3.2 - 13.3: Not supported
  2. ❌ 13.4 - 18.4: Disabled by default
  3. ❌ 18.5: Disabled by default
  4. ❌ 26.0: Disabled by default

Samsung Internet

  1. ❌ 4: Not supported
  2. ✅ 5 - 27: Supported
  3. ✅ 28: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ✅ 80: Supported

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ✅ 138: Supported

Firefox for Android

  1. ✅ 140: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

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