JavaScript built-in: Object: freeze

IE

  1. 6 - 8: Not supported
  2. 9 - 10: Supported
  3. 11: Supported

Edge

  1. 12 - 125: Supported
  2. 126: Supported

Firefox

  1. 2 - 3.6: Not supported
  2. 4 - 127: Supported
  3. 128: Supported
  4. 129 - 131: Supported

Chrome

  1. 4 - 5: Not supported
  2. 6 - 125: Supported
  3. 126: Supported
  4. 127 - 129: Supported

Safari

  1. 3.1 - 5: Not supported
  2. 5.1 - 17.4: Supported
  3. 17.5: Supported
  4. 17.6 - TP: Supported

Opera

  1. 10 - 11.5: Not supported
  2. 12.1 - 110: Supported
  3. 111: Supported

Safari on iOS

  1. 3.2 - 4.3: Not supported
  2. 5 - 17.4: Supported
  3. 17.5: Supported
  4. 17.6 - 18.0: Supported

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 126: Supported

Opera Mobile

  1. 12 - 12.1: Supported
  2. 80: Supported

Chrome for Android

  1. 126: Supported

Firefox for Android

  1. 127: Supported

UC Browser for Android

  1. 15.5: Support unknown

Samsung Internet

  1. 4 - 24: Supported
  2. 25: Supported

QQ Browser

  1. 14.9: Support unknown

Baidu Browser

  1. 13.52: Support unknown

KaiOS Browser

  1. 2.5: Support unknown
  2. 3: Support unknown