Mutation Hook Info
Type: Object
Object describing a mutation hook to be registered.
Properties
expected Result Type
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 Event
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 Query
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.