ECMAScript 5 Strict Mode
- OTHERMethod of placing code in a "strict" operating context.
Chrome
- 4 - 12: Not supported
- 13 - 116: Supported
- 117: Supported
- 118 - 120: Supported
Edge
- 12 - 116: Supported
- 117: Supported
Safari
- 3.1 - 4: Not supported
- 5 - 5.1: Partial support
- 6 - 16.6: Supported
- 17.0: Supported
- 17.1 - TP: Supported
Firefox
- 2 - 3.6: Not supported
- 4 - 116: Supported
- 117: Supported
- 118 - 120: Supported
Opera
- 9 - 11.5: Not supported
- 11.6 - 101: Supported
- 102: Supported
IE
- 5.5 - 9: Not supported
- 10: Supported
- 11: Supported
Chrome for Android
- 117: Supported
Safari on iOS
- 3.2 - 4.3: Not supported
- 5 - 16.6: Supported
- 17.0: Supported
- 17.1: Supported
Samsung Internet
- 4 - 21: Supported
- 22: Supported
Opera Mini
- all: Supported
Opera Mobile
- 10 - 11.1: Not supported
- 11.5 - 12.1: Supported
- 73: Supported
UC Browser for Android
- 15.5: Supported
Android Browser
- 2.1 - 2.3: Not supported
- 3 - 4.4.4: Supported
- 117: Supported
Firefox for Android
- 117: Supported
QQ Browser
- 13.1: Supported
Baidu Browser
- 13.18: Supported
KaiOS Browser
- 2.5: Supported
- 3: Supported
- Resources:
- Article with test suite
- Information page