Can I use
?

Resize Observer

- WD

Method for observing and reacting to changes to sizes of DOM elements.

Chrome

  1. 4 - 53: Not supported
  2. 54 - 63: Disabled by default
  3. 64 - 110: Supported
  4. 111: Supported
  5. 112 - 114: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 110: Supported
  3. 111: Supported

Safari

  1. 3.1 - 12.1: Not supported
  2. 13: Disabled by default
  3. 13.1 - 16.2: Supported
  4. 16.3: Supported
  5. 16.4 - TP: Supported

Firefox

  1. 2 - 68: Not supported
  2. 69 - 110: Supported
  3. 111: Supported
  4. 112 - 113: Supported

Opera

  1. 9 - 40: Not supported
  2. 41 - 51: Disabled by default
  3. 52 - 94: Supported
  4. 95: Supported

IE

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

Chrome for Android

  1. 111: Supported

Safari on iOS

  1. 3.2 - 13.3: Not supported
  2. 13.4 - 16.2: Supported
  3. 16.3: Supported
  4. 16.4: Supported

Samsung Internet

  1. 4 - 8.2: Not supported
  2. 9.2 - 19.0: Supported
  3. 20: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 13.4: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 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: Not supported
  2. 3: Supported
Resources:
WebKit implementation bug
Firefox implementation bug
Google Developers Article
Polyfill based on latest specification which includes support for observer options
Polyfill based on initial specification
Explainer Doc