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.

Syntax

sel.extend(node, offset)

Parameters

node
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.

Specifications

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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Experimental
Chrome Full support YesEdge Full support YesFirefox Full support YesIE No support NoOpera Full support YesSafari Full support YesWebView Android No support NoChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
offset parameter is optional
Experimental
Chrome Full support YesEdge ? Firefox Full support 55IE No support NoOpera Full support YesSafari Full support YesWebView Android No support NoChrome Android Full support YesEdge Mobile ? Firefox Android Full support 55Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also

Document Tags and Contributors

Last updated by: mfluehr,