Selection: extend() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

See full compatibility

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

extend(node)
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.

Return value

None (undefined).

Specifications

Specification
Selection API # dom-selection-extend

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`extend`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 1 (Release date: 2004-11-09) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 3.1 (Release date: 2008-03-18) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 4 (Release date: 2011-03-29) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 2 (Release date: 2008-07-11) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 2 (Release date: 2008-07-11) footnote Full support
Accepts `node` parameter in any tree/shadow tree	Chrome – Full support Chrome 137 (Release date: 2025-05-27) footnote Full support	Edge – Full support Edge 137 (Release date: 2025-05-29) footnote Full support	Firefox – Full support Firefox 142 (Release date: 2025-08-19) footnote Full support	Opera – Full support Opera 121 (Release date: 2025-08-27) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 137 (Release date: 2025-05-27) footnote Full support	Firefox for Android – Full support Firefox for Android 142 (Release date: 2025-08-19) footnote Full support	Opera Android – Full support Opera Android 90 (Release date: 2025-06-18) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 137 (Release date: 2025-05-27) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`offset` parameter is optional	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 17 (Release date: 2018-04-30) footnote Full support	Firefox – Full support Firefox 55 (Release date: 2017-08-08) footnote Full support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – Full support Safari 3.1 (Release date: 2008-03-18) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 55 (Release date: 2017-08-08) footnote Full support	Opera Android – Full support Opera Android 14 (Release date: 2013-05-21) footnote Full support	Safari on iOS – Full support Safari on iOS 2 (Release date: 2008-07-11) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 2 (Release date: 2008-07-11) footnote Full support

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Full support: Full support
No support: No support