Custom Elements (V1)
- LSOne of the key features of the Web Components system, custom elements allow new HTML tags to be defined.
Chrome
- ❌ 4 - 51: Not supported
- ❌ 52 - 53: Not supported (but has polyfill available)
- ◐ 54 - 66: Partial support
- ✅ 67 - 134: Supported
- ✅ 135: Supported
- ✅ 136 - 138: Supported
Edge
- ❌ 12 - 18: Not supported (but has polyfill available)
- ✅ 79 - 134: Supported
- ✅ 135: Supported
Safari
- ❌ 3.1 - 7.1: Not supported
- ❌ 8 - 10: Not supported (but has polyfill available)
- ◐ 10.1 - 18.3: Partial support
- ◐ 18.4: Partial support
- ◐ 18.5 - TP: Partial support
Firefox
- ❌ 2 - 29: Not supported
- ❌ 30 - 49: Not supported (but has polyfill available)
- ❌ 50 - 58: Disabled by default
- ❌ 59 - 62: Disabled by default
- ✅ 63 - 136: Supported
- ✅ 137: Supported
- ✅ 138 - 140: Supported
Opera
- ❌ 9 - 40: Not supported
- ◐ 41 - 63: Partial support
- ✅ 64 - 116: Supported
- ✅ 117: Supported
IE
- ❌ 5.5 - 9: Not supported
- ❌ 10: Not supported (but has polyfill available)
- ❌ 11: Not supported (but has polyfill available)
Chrome for Android
- ✅ 135: Supported
Safari on iOS
- ❌ 3.2 - 10.2: Not supported
- ◐ 10.3 - 18.3: Partial support
- ◐ 18.4: Partial support
- ◐ 18.5: Partial support
Samsung Internet
- ❌ 4: Not supported
- ◐ 5: Partial support
- ✅ 6.2 - 26: Supported
- ✅ 27: Supported
Opera Mini
- ❌ all: Not supported
Opera Mobile
- ❌ 10 - 12.1: Not supported
- ✅ 80: Supported
UC Browser for Android
- ✅ 15.5: Supported
Android Browser
- ❌ 2.1 - 4.4.4: Not supported
- ✅ 135: Supported
Firefox for Android
- ✅ 137: Supported
QQ Browser
- ✅ 14.9: Supported
Baidu Browser
- ✅ 13.52: Supported
KaiOS Browser
- ❌ 2.5: Not supported (but has polyfill available)
- ✅ 3: Supported