Web/API/MutationObserverInit/childList

The MutationObserverInit dictionary's optional childList property indicates whether or not to monitor the specified node or nodes for the addition or removal of new child nodes.

If childList is false (the default), adding or removing new nodes does not trigger mutation callbacks. By setting childList to true, your callback will be invoked any time nodes are added to or removed from the DOM node or nodes being watched.

Syntax

var options = {
  childList: true | false
}

Value

A Boolean value indicating whether or not to invoke the callback function when new nodes are added to or removed from the section of the DOM being monitored.. If subtree is false, only the node indicated by the observer's target node is monitored for changes. Setting subtree to true causes addition or removal of nodes anywhere within the subtree rooted at target to be reported.

Specifications

Specification	Status	Comment
DOMThe definition of 'MutationObserverInit.childList' in that specification.	Living Standard

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
childList	Chrome Full support 26 Full support 26 No support 18 — 26 Prefixed' Prefixed' Implemented with the vendor prefix: webkit	Edge Full support 12	Firefox Full support 14	IE Full support 11	Opera Full support 15	Safari Full support 7 Full support 7 No support 6 — 7 Prefixed' Prefixed' Implemented with the vendor prefix: webkit	WebView Android ?	Chrome Android Full support 26 Full support 26 No support 18 — 26 Prefixed' Prefixed' Implemented with the vendor prefix: webkit	Firefox Android Full support 14	Opera Android Full support 14	Safari iOS Full support 7 Full support 7 No support 6 — 7 Prefixed' Prefixed' Implemented with the vendor prefix: webkit	Samsung Internet Android Full support 1.5 Full support 1.5 No support 1.0 — 1.5 Prefixed' Prefixed' Implemented with the vendor prefix: webkit

Legend

Full support  

Full support

Compatibility unknown  

Compatibility unknown

Requires a vendor prefix or different name for use.'

Requires a vendor prefix or different name for use.

MutationObserverInit.childList by Mozilla Contributors is licensed under CC-BY-SA 2.5.