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

The Selection.anchorOffset read-only property returns the number of characters that the selection's anchor is offset within the Selection.anchorNode.

This number is zero-based. If the selection begins with the first character in the Selection.anchorNode, 0 is returned.

Syntax

number = sel.anchorOffset

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome ? Edge Full support YesFirefox Full support YesIE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full 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: ddbeck,