MutationRecord: attributeNamespace property

The MutationRecord read-only property attributeNamespace is the namespace of the mutated attribute in the MutationRecord observed by a MutationObserver.

Value

If the record's type is attributes, the property is a string representing the namespace of the mutated attribute of the mutation target. The value is null otherwise.

Specifications

Specification
DOM Standard
# ref-for-dom-mutationrecord-attributenamespace②

Browser compatibility

desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
attributeNamespace