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.

Example

Specifications

Specification Status Comment
DOM
The definition of 'MutationObserverInit.childList' in that specification.
Living Standard Ā 

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
childListChrome Full support 26
Full support 26
No support 18Ā ā€” 26
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support YesFirefox Full support 14IE Full support 11Opera Full support 15Safari Full support 7
Full support 7
No support 6Ā ā€” 7
Prefixed
Prefixed Implemented with the vendor prefix: webkit
WebView Android ? Chrome Android Full support 26
Full support 26
No support 18Ā ā€” 26
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox Android Full support 14Opera Android Full support 14Safari iOS Full support 7
Full support 7
No support 6Ā ā€” 7
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Samsung Internet Android ?

Legend

Full support Ā 
Full support
Compatibility unknown Ā 
Compatibility unknown
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.