Mutation Observer

- LS

Method for observing and reacting to changes to the DOM. Replaces MutationEvents, which is deprecated.

IE

  1. 5.5 - 8: Not supported
  2. 9 - 10: Not supported (but has polyfill available)
  3. 11: Supported

Edge

  1. 12 - 86: Supported
  2. 87: Supported

Firefox

  1. 2 - 13: Not supported
  2. 14 - 82: Supported
  3. 83: Supported
  4. 84 - 85: Supported

Chrome

  1. 4 - 17: Not supported
  2. 18 - 26: Supported
  3. 27 - 86: Supported
  4. 87: Supported
  5. 88 - 90: Supported

Safari

  1. 3.1 - 5.1: Not supported
  2. 6: Supported
  3. 6.1 - 13.1: Supported
  4. 14: Supported
  5. TP: Supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 71: Supported
  3. 72: Supported

iOS Safari

  1. 3.2 - 5.1: Not supported
  2. 6: Supported
  3. 7 - 13.7: Supported
  4. 14: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 3: Not supported
  2. 4 - 4.3: Not supported (but has polyfill available)
  3. 4.4 - 4.4.4: Supported
  4. 81: Supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Supported

Chrome for Android

  1. 86: Supported

Firefox for Android

  1. 82: Supported

IE Mobile

  1. 10: Not supported (but has polyfill available)
  2. 11: Supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 11.2: Supported
  2. 12.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Supported

When changing the innerHTML content of a node containing a single CharacterData node, resulting in a single-but-different CharacterData child node, WebKit browsers consider this a characterData mutation of the child CharacterData node, while other browsers consider it a childList mutation of the parent node.

Resources:
MutationObserver from MDN
Polyfill