Auxclick

- WD

The click event for non-primary buttons of input devices

IE

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

Edge

  1. 12 - 18: Not supported
  2. 79 - 86: Supported
  3. 87: Supported

Firefox

  1. 2 - 52: Not supported
  2. 53 - 82: Supported
  3. 83: Supported
  4. 84 - 85: Supported

Chrome

  1. 4 - 54: Not supported
  2. 55 - 86: Supported
  3. 87: Supported
  4. 88 - 90: Supported

Safari

  1. 3.1 - 13.1: Not supported
  2. 14: Not supported
  3. TP: Not supported

Opera

  1. 9 - 41: Not supported
  2. 42 - 71: Supported
  3. 72: Supported

iOS Safari

  1. 3.2 - 13.7: Not supported
  2. 14: Not supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Support unknown

Chrome for Android

  1. 87: Supported

Firefox for Android

  1. 83: Supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 12.0: Supported
  3. 13.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Not supported

With introduction of this feature there will be no longer click event fired for non-primary buttons

Resources:
WebKit bug
Firefox implementation
MDN Web Docs - auxclick
Original Proposal
Microsoft Edge feature request on UserVoice