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.


number = sel.anchorOffset


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

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ? Yes Yes ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? Yes Yes ? ? ?

See also

Document Tags and Contributors

Last updated by: ddbeck,