tabindex global attribute
- LSSpecifies the focusability of the element and in what order (if any) it should become focused (relative to other elements) when "tabbing" through the document.
IE
- 5.5 - 6: Support unknown
- 7 - 10: Supported
- 11: Supported
Edge
- 12 - 87: Supported
- 88: Supported
Firefox
- 2 - 3.6: Support unknown
- 4 - 84: Supported
- 85: Supported
- 86 - 87: Supported
Chrome
- 4 - 14: Support unknown
- 15 - 87: Supported
- 88: Supported
- 89 - 91: Supported
Safari
- 3.1 - 5: Support unknown
- 5.1 - 13.1: Supported
- 14: Supported
- TP: Supported
Opera
- 9: Support unknown
- 9.5 - 72: Supported
- 73: Supported
iOS Safari
- 3.2 - 13.7: Supported
- 14: Supported
Opera Mini
- all: Support unknown
Android Browser
- 2.1 - 4.4.4: Support unknown
- 81: Support unknown
Opera Mobile
- 10 - 12.1: Support unknown
- 59: Support unknown
Chrome for Android
- 88: Supported
Firefox for Android
- 85: Supported
UC Browser for Android
- 12.12: Support unknown
Samsung Internet
- 4 - 12.0: Support unknown
- 13.0: Support unknown
QQ Browser
- 10.4: Supported
Baidu Browser
- 7.12: Support unknown
KaiOS Browser
- 2.5: Supported
Mac OS X "Full Keyboard Access" refers to setting Keyboard→Shortcuts→Full Keyboard Access to "All controls" in the System Preferences.
"Unknown" support for mobile browsers is due to lacking a method of tabbing through fields.
- Resources:
- MDN Web Docs - tabindex attribute