Mutation
Type: Object
Object describing a mutation hook to be registered.
Properties
expected
Type: Number
The type of data returned by valueQuery, use the static properties of evaluateXPath. It is recommended to set this when using the valueQuery.
on
Defines the function to respond the events. We recommend usage of the MutationHookXQueryFunctionReference for a better API experience.
selector
Type: XPathTest
The selector specifying the nodes to which to react. Note that this must be in a form of self::para, see Mutation Hooks for more information.
value
Type: XPathQuery
When provided, the hook will only trigger when the result of this query changes for any node matching the selector that remains part of a loaded document.