attributeName property

Retrieves the name of the attribute that was added, removed, or changed (or null otherwise).

This property is read-only.

Syntax

ptr = object.attributeName

Property values

Type: DOMString

Remarks

If the MutationRecord is of type attributes, you can use its attributeName property to identify the specific attribute that changed. If you registered (via the MutationObserver.observe method) to collect attributeOldValue data on your target node, the oldValue property provides the original attribute value before it was changed.

See also

MutationRecord