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unhandledrejection/rejectionhandled events

- LS

The unhandledrejection event is fired when a Promise is rejected but there is no rejection handler to deal with the rejection. The rejectionhandled event is fired when a Promise is rejected, and after the rejection is handled by the promise's rejection handling code.

Chrome

  1. ❌ 4 - 48: Not supported
  2. ✅ 49 - 155: Supported
  3. ✅ 156: Supported
  4. ✅ 157 - 159: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 154: Supported
  3. ✅ 155: Supported

Safari

  1. ❌ 3.1 - 10.1: Not supported
  2. ✅ 11 - 26.6: Supported
  3. ✅ 27: Supported
  4. ✅ 27.1 - TP: Supported

Firefox

  1. ❌ 2 - 68: Not supported
  2. ✅ 69 - 157: Supported
  3. ✅ 158: Supported
  4. ✅ 159 - 161: Supported

Opera

  1. ❌ 9 - 35: Not supported
  2. ✅ 36 - 134: Supported
  3. ✅ 135: Supported

IE

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

Chrome for Android

  1. ✅ 156: Supported

Safari on iOS

  1. ❌ 3.2 - 10.3: Not supported
  2. ﹖ 11: Support unknown
  3. ✅ 11.3 - 26.6: Supported
  4. ✅ 27.0: Supported
  5. ✅ 27.1 - 27.2: Supported

Samsung Internet

  1. ❌ 4: Not supported
  2. ✅ 5 - 29: Supported
  3. ✅ 30: 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. ✅ 156: Supported

Firefox for Android

  1. ✅ 158: 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 article on rejectionhandled
MDN article on unhandledrejection
Polyfill for this feature is available in the core-js library
Chrome sample code