A MutationRecord
represents an individual DOM mutation. It is the object that is passed to MutationObserver
's callback.
Properties
Property | Type | Description |
MutationRecord.type |
String |
Returns "attributes" if the mutation was an attribute mutation,"characterData" if it was a mutation to a CharacterData node,and "childList" if it was a mutation to the tree of nodes. |
MutationRecord.target |
Node |
Returns the node the mutation affected, depending on the MutationRecord.type .For attributes , it is the element whose attribute changed.For characterData , it is the CharacterData node.For childList , it is the node whose children changed. |
MutationRecord.addedNodes |
NodeList |
Return the nodes added. Will be an empty NodeList if no nodes were added. |
MutationRecord.removedNodes |
NodeList |
Return the nodes removed. Will be an empty NodeList if no nodes were removed. |
MutationRecord.previousSibling |
Node |
Return the previous sibling of the added or removed nodes, or null . |
MutationRecord.nextSibling |
Node |
Return the next sibling of the added or removed nodes, or null . |
MutationRecord.attributeName |
String |
Returns the local name of the changed attribute, or null . |
MutationRecord.attributeNamespace |
String |
Returns the namespace of the changed attribute, or null . |
MutationRecord.oldValue |
String |
The return value depends on the Note that for this to work as expected, |
Specifications
Specification | Status | Comment |
---|---|---|
DOM The definition of 'MutationRecord' in that specification. |
Living Standard |
Browser compatibility
BCD tables only load in the browser