MutationRecord class

A MutationRecord represents an individual DOM mutation. It is the object that is passed to MutationObserver’s MutationCallback.

Inheritance: MutationRecord → DOMObject

The MutationRecord type exposes the following members:

Property	Description
type	Returns “attributes” if it 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.
target	Returns the node the mutation affected, depending on the 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.
added_nodes	Return the nodes added.
removed_nodes	Return the nodes removed.
previous_sibling	Returns the previous sibling of the added or removed nodes, or null.
next_sibling	Return the next sibling of the added or removed nodes, or null.
attribute_name	Returns the local name of the changed attribute, and null otherwise.
attribute_namespace	Returns the namespace of the changed attribute, and null otherwise.
old_value	The return value depends on type. For “attributes”, it is the value of the changed attribute before the change. For “characterData”, it is the data of the changed node before the change. For “childList”, it is null.

Method	Description
get_platform_type	This method is used to retrieve ECMAScript object Type.