Limited Availability
Custom elements
id: customized-built-in-elements
Customized built-in elements
Customized built-in elements are HTML elements that extend built-in elements using the
is attribute, to add new behaviors that you define.
Baseline Status:
This feature is currently Limited and is missing in at least one major browser engine.
Desktop Browser Engine Support
Google Chrome
67
Supported
Mozilla Firefox
63
Supported
Apple Safari
—
Unsupported
Microsoft Edge
79
Supported
Mobile Browser Engine Support
Chrome Android
67
Firefox Android
63
Safari iOS
—
Specifications and References
MDN Browser Compat Data Keys: