ECMAScript 5
- OTHERFull support for the ECMAScript 5 specification. Features include Function.prototype.bind, Array methods like indexOf, forEach, map & filter, Object methods like defineProperty, create & keys, the trim method on Strings and many more.
Chrome
- ◐ 4 - 18: Partial support
- ◐ 19 - 22: Partial support
- ✅ 23 - 141: Supported
- ✅ 142: Supported
- ✅ 143 - 145: Supported
Edge
- ✅ 12 - 141: Supported
- ✅ 142: Supported
Safari
- ◐ 3.1 - 5.1: Partial support
- ✅ 6 - 26.0: Supported
- ✅ 26.1: Supported
- ✅ 26.2 - TP: Supported
Firefox
- ◐ 2 - 3.6: Partial support
- ◐ 4 - 20: Partial support
- ✅ 21 - 143: Supported
- ✅ 144: Supported
- ✅ 145 - 147: Supported
Opera
- ◐ 9 - 12: Partial support
- ◐ 12.1: Partial support
- ✅ 15 - 121: Supported
- ✅ 122: Supported
IE
- ❌ 5.5 - 7: Not supported
- ❌ 8: Not supported
- ◐ 9: Partial support
- ✅ 10: Supported
- ✅ 11: Supported
Chrome for Android
- ✅ 142: Supported
Safari on iOS
- ◐ 3.2 - 5.1: Partial support
- ✅ 6 - 18.6: Supported
- ✅ 26.0: Supported
- ✅ 26.1: Supported
Samsung Internet
- ✅ 4 - 28: Supported
- ✅ 29: Supported
Opera Mini
- ◐ all: Partial support
Opera Mobile
- ◐ 10 - 12: Partial support
- ◐ 12.1: Partial support
- ✅ 80: Supported
UC Browser for Android
- ✅ 15.5: Supported
Android Browser
- ◐ 2.1 - 3: Partial support
- ◐ 4: Partial support
- ◐ 4.1 - 4.3: Partial support
- ✅ 4.4 - 4.4.4: Supported
- ✅ 142: Supported
Firefox for Android
- ✅ 144: Supported
QQ Browser
- ✅ 14.9: Supported
Baidu Browser
- ✅ 13.52: Supported
KaiOS Browser
- ✅ 2.5: Supported
- ✅ 3: Supported
As the specification includes many JavaScript features, un-numbered partial support varies widely and is shown in detail on the ECMAScript 5 compatibility tables by Kangax.
- Resources:
- Detailed compatibility tables & tests
- ES5 polyfill
- Polyfill for all possible ES5 features is available in the core-js library
- Overview of objects & properties
- Sub-features:
- ECMAScript 5 Strict Mode
- JSON parsing