This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The Selection.extend() method moves the focus of the selection to a specified point. The anchor of the selection does not move. The selection will be from the anchor to the new focus regardless of direction.


sel.extend(node, offset)


The node within which the focus will be moved.
offset Optional
The offset position within node where the focus will be moved to. If not specified, the default value 0 is used.


Specification Status Comment
HTML Editing APIs
The definition of 'Selection.extend()' in that specification.
Editor's Draft Initial definition
Selection API
The definition of 'Selection.extend()' in that specification.
Working Draft Current

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes No Yes Yes
offset parameter is optional Yes ?55 No Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No Yes Yes Yes Yes Yes ?
offset parameter is optional No Yes ?55 Yes Yes ?

See also