Range: isPointInRange() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2017.

See full compatibility

The isPointInRange() method of the Range interface determines whether a specified point is within the Range. The point is specified by a reference node and an offset within that node. It is equivalent to calling Range.comparePoint() and checking if the result is 0.

Syntax

isPointInRange(referenceNode, offset)

Parameters

referenceNode: The Node that the offset is relative to.
offset: An integer greater than or equal to zero describing the position inside referenceNode of the point to be checked. If referenceNode is a Node of type Text, Comment, or CDATASection, then offset is the number of characters from the start of referenceNode. For other Node types, offset is the number of child nodes from the start of the referenceNode.

Return value

A boolean.

Examples

const text = new Text("0123456789");

const thisRange = new Range();
thisRange.setStart(text, 1);
thisRange.setEnd(text, 6);

thisRange.isPointInRange(text, 3); // true
thisRange.isPointInRange(text, 0); // false
thisRange.isPointInRange(text, 6); // true
thisRange.isPointInRange(text, 7); // false

Specifications

Specification
DOM # dom-range-ispointinrange

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
`isPointInRange`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 15 (Release date: 2017-04-05) 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 (Release date: 2007-10-26) 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 1 (Release date: 2007-06-29) 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 1 (Release date: 2007-06-29) footnote Full support

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Full support: Full support