Interface MutationObserver

Provides the ability to watch for changes being made to the DOM tree. It is designed as a replacement for the older Mutation Events feature which was part of the DOM3 Events specification.

Hierarchy

MutationObserver

Index

Methods

disconnect observe takeRecords

Methods

disconnect

disconnect(): void
Stops observer from observing any mutations. Until the observe() method is used again, observer's callback will not be invoked.

MDN Reference

Returns void

observe

observe(target, options?): void
Instructs the user agent to observe a given target (a node) and report any mutations based on the criteria given by options (an object).

The options argument allows for setting mutation observation options via object members.

MDN Reference
Parameters
- target: Node
- Optional options: MutationObserverInit
Returns void

takeRecords

takeRecords(): MutationRecord[]
Empties the record queue and returns what was in there.

MDN Reference

Returns MutationRecord[]