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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) (Yes) (Yes) No support (Yes) (Yes)
offset parameter is optional (Yes) ? 55 (55) No support (Yes) (Yes)
Feature Android Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? (Yes) (Yes) ? ? (Yes)
offset parameter is optional ? ? 55.0 (55) ? ? (Yes)

See also