Can I use
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KeyboardEvent.code

- WD

A KeyboardEvent property representing the physical key that was pressed, ignoring the keyboard layout and ignoring whether any modifier keys were active.

Chrome

  1. ❌ 4 - 41: Not supported
  2. ❌ 42 - 47: Disabled by default
  3. ✅ 48 - 141: Supported
  4. ✅ 142: Supported
  5. ✅ 143 - 145: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 141: Supported
  3. ✅ 142: Supported

Safari

  1. ❌ 3.1 - 10: Not supported
  2. ✅ 10.1 - 26.0: Supported
  3. ✅ 26.1: Supported
  4. ✅ 26.2 - TP: Supported

Firefox

  1. ❌ 2 - 37: Not supported
  2. ✅ 38 - 143: Supported
  3. ✅ 144: Supported
  4. ✅ 145 - 147: Supported

Opera

  1. ❌ 9 - 28: Not supported
  2. ❌ 29 - 34: Disabled by default
  3. ✅ 35 - 121: Supported
  4. ✅ 122: Supported

IE

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

Chrome for Android

  1. ❌ 142: Disabled by default

Safari on iOS

  1. ❌ 3.2 - 10.2: Not supported
  2. ✅ 10.3 - 18.6: Supported
  3. ✅ 26.0: Supported
  4. ✅ 26.1: Supported

Samsung Internet

  1. ❌ 4: Not supported
  2. ❌ 5 - 28: Disabled by default
  3. ❌ 29: Disabled by default

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

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

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 142: Not supported

Firefox for Android

  1. ✅ 144: Supported

QQ Browser

  1. ❌ 14.9: Not supported

Baidu Browser

  1. ❌ 13.52: Disabled by default

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported

"Some key events, or their values, might be suppressed by the IME in use". On mobile (virtual keyboard), all keys are reported as empty ("").

Resources:
WebKit feature request bug
Chrome tracking bug
MDN Web Docs - code
Caught at shutdownArray ( [type] => 1 [message] => Uncaught Error: Call to undefined method CaniuseIndex::runTests() in /home/canius6/public_html/admin/templates/main.tpl.php:174 Stack trace: #0 /home/canius6/public_html/admin/lib/index.class.php(204): include() #1 /home/canius6/public_html/admin/lib/index.class.php(788): CaniuseIndex->showPage() #2 /home/canius6/public_html/admin/lib/index.class.php(44): CaniuseIndex->start() #3 /home/canius6/public_html/index.php(10): CaniuseIndex->showIndex() #4 {main} thrown [file] => /home/canius6/public_html/admin/templates/main.tpl.php [line] => 174 ) Caught at shutdown