Return the nodes added.
Returns the local name of the changed attribute, or null.
Returns the namespace of the changed attribute, or null.
Return the next sibling of the added or removed nodes, or null.
The return value depends on the type.
Return the previous sibling of the added or removed nodes, or null.
Return the nodes removed.
Returns the node the mutation affected, depending on the type.
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.