readonly attribute of input and textarea elements

- LS

Makes the form control non-editable. Unlike the disabled attribute, readonly form controls are still included in form submissions and the user can still select (but not edit) their value text.

Chrome

  1. 4 - 25: Support unknown
  2. 26 - 116: Supported
  3. 117: Supported
  4. 118 - 120: Supported

Edge

  1. 12 - 116: Supported
  2. 117: Supported

Safari

  1. 3.1 - 5: Support unknown
  2. 5.1 - 16.5: Supported
  3. 16.6: Supported
  4. 17.0 - TP: Supported

Firefox

  1. 2 - 3.6: Support unknown
  2. 4 - 116: Supported
  3. 117: Supported
  4. 118 - 120: Supported

Opera

  1. 9 - 9.6: Support unknown
  2. 10 - 12.1: Partial support
  3. 15 - 101: Supported
  4. 102: Supported

IE

  1. 5.5: Support unknown
  2. 6 - 10: Supported
  3. 11: Supported

Chrome for Android

  1. 117: Supported

Safari on iOS

  1. 3.2 - 6.1: Support unknown
  2. 7 - 16.6: Supported
  3. 17.0: Supported
  4. 17.1: Supported

Samsung Internet

  1. 4 - 21: Supported
  2. 22: Supported

Opera Mini

  1. all: Supported

Opera Mobile

  1. 10 - 12.1: Partial support
  2. 73: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 2.2: Support unknown
  2. 2.3 - 4.4.4: Supported
  3. 117: Supported

Firefox for Android

  1. 117: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported
Resources:
MDN Web Docs - readonly attribute
WHATWG HTML specification for the readonly attribute of the `<textarea>` element