Document.execCommand()

- UNOFF

Allows running commands to manipulate the contents of an editable region in a document switched to designMode

Chrome

  1. 4 - 130: Supported
  2. 131: Supported
  3. 132 - 134: Supported

Edge

  1. 12 - 130: Supported
  2. 131: Supported

Safari

  1. 3.1 - 5.1: Support unknown
  2. 6 - 18.0: Supported
  3. 18.1: Supported
  4. 18.2 - TP: Supported

Firefox

  1. 2 - 8: Not supported
  2. 9 - 132: Supported
  3. 133: Supported
  4. 134 - 136: Supported

Opera

  1. 9 - 9.6: Support unknown
  2. 10 - 113: Supported
  3. 114: Supported

IE

  1. 5.5 - 10: Supported
  2. 11: Supported

Chrome for Android

  1. 131: Supported

Safari on iOS

  1. 3.2 - 4.1: Not supported
  2. 4.2 - 6.1: Support unknown
  3. 7 - 18.0: Supported
  4. 18.1: Supported
  5. 18.2: Supported

Samsung Internet

  1. 4 - 25: Supported
  2. 26: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Supported
  2. 80: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4: Not supported
  2. 4.1 - 4.4.4: Supported
  3. 131: Supported

Firefox for Android

  1. 132: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported

To determine what commands are supported, see Document.queryCommandSupported()

Resources:
execCommand and queryCommandSupported demo
MDN Web Docs - execCommand