Shadow DOM (V1)
- WDMethod of establishing and maintaining functional boundaries between DOM trees and how these trees interact with each other within a document, thus enabling better functional encapsulation within the DOM & CSS.
Chrome
- 4 - 52: Not supported
- 53 - 116: Supported
- 117: Supported
- 118 - 120: Supported
Edge
- 12 - 18: Not supported
- 79 - 116: Supported
- 117: Supported
Safari
- 3.1 - 9.1: Not supported
- 10 - 16.5: Supported
- 16.6: Supported
- 17.0 - TP: Supported
Firefox
- 2 - 57: Not supported
- 58: Disabled by default
- 59 - 62: Disabled by default
- 63 - 116: Supported
- 117: Supported
- 118 - 120: Supported
Opera
- 9 - 39: Not supported
- 40 - 101: Supported
- 102: Supported
IE
- 5.5 - 10: Not supported
- 11: Not supported
Chrome for Android
- 117: Supported
Safari on iOS
- 3.2 - 9.3: Not supported
- 10 - 10.3: Partial support
- 11 - 16.6: Supported
- 17.0: Supported
- 17.1: Supported
Samsung Internet
- 4: Not supported
- 5: Partial support
- 6.2 - 21: Supported
- 22: Supported
Opera Mini
- all: Not supported
Opera Mobile
- 10 - 12.1: Not supported
- 73: Supported
UC Browser for Android
- 15.5: Supported
Android Browser
- 2.1 - 4.4.4: Not supported
- 117: Supported
Firefox for Android
- 117: Supported
QQ Browser
- 13.1: Supported
Baidu Browser
- 13.18: Supported
KaiOS Browser
- 2.5: Not supported
- 3: Supported