Can I use
?

Selection API

- WD

API for accessing selected content of a document, including the window.getSelection() method, as well as the selectstart & selectionchange events on document.

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 110: Supported
  3. 111: Supported
  4. 112 - 114: Supported

Edge

  1. 12 - 110: Supported
  2. 111: Supported

Safari

  1. 3.1 - 5: Support unknown
  2. 5.1 - 16.3: Supported
  3. 16.4: Supported
  4. 16.5 - TP: Supported

Firefox

  1. 2 - 42: Partial support
  2. 43 - 51: Partial support
  3. 52 - 110: Supported
  4. 111: Supported
  5. 112 - 113: Supported

Opera

  1. 9 - 12.1: Partial support
  2. 15 - 94: Supported
  3. 95: Supported

IE

  1. 5.5: Support unknown
  2. 6 - 8: Partial support
  3. 9 - 10: Supported
  4. 11: Supported

Chrome for Android

  1. 111: Supported

Safari on iOS

  1. 3.2 - 4.1: Partial support
  2. 4.2: Support unknown
  3. 5 - 16.3: Partial support
  4. 16.4: Partial support
  5. 16.5: Partial support

Samsung Internet

  1. 4 - 19.0: Supported
  2. 20: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12: Support unknown
  2. 12.1: Partial support
  3. 73: Supported

UC Browser for Android

  1. 13.4: Supported

Android Browser

  1. 2.1 - 4.1: Support unknown
  2. 4.2: Supported
  3. 4.4 - 4.4.4: Supported
  4. 111: Supported

Firefox for Android

  1. 110: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Partial support
  2. 3: Supported

See also support for the related DOM range

Resources:
Firefox support bug