indeterminate checkbox
- LSIndeterminate checkboxes are displayed in a state which is distinct both from being checked or being unchecked. They are commonly used in hierarchical checkboxes to indicate that only some of the checkbox's descendants are checked.
Chrome
- 4 - 27: Not supported
- 28 - 112: Supported
- 113: Supported
- 114 - 116: Supported
Edge
- 12 - 112: Supported
- 113: Supported
Safari
- 3.1 - 5.1: Not supported
- 6 - 16.4: Supported
- 16.5: Supported
- 16.6 - TP: Supported
Firefox
- 2 - 3: Not supported
- 3.5: Support unknown
- 3.6 - 112: Supported
- 113: Supported
- 114 - 115: Supported
Opera
- 9 - 11.5: Not supported
- 11.6 - 98: Supported
- 99: Supported
IE
- 5.5: Support unknown
- 6 - 10: Supported
- 11: Supported
Chrome for Android
- 113: Supported
Safari on iOS
- 3.2 - 12.1: Not supported
- 12.2 - 16.4: Supported
- 16.5: Supported
Samsung Internet
- 4 - 20: Supported
- 21: Supported
Opera Mini
- all: Not supported
Opera Mobile
- 10 - 12.1: Not supported
- 73: Supported
UC Browser for Android
- 13.4: Supported
Android Browser
- 2.1 - 4.3: Not supported
- 4.4 - 4.4.4: Supported
- 113: Supported
Firefox for Android
- 113: Supported
QQ Browser
- 13.1: Supported
Baidu Browser
- 13.18: Supported
KaiOS Browser
- 2.5: Supported
- 3: Supported
Indeterminacy does not affect a checkbox's checkedness state. It merely affects how the checkbox is displayed.