Range.comparePoint()

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

The Range.comparePoint() method returns -1, 0, or 1 depending on whether the referenceNode is before, the same as, or after the Range.

If the reference node is a Node of type Text, Comment, or CDATASection, then offset is the number of characters from the start of reference node. For other Node types, offset is the number of child nodes between the start of the reference node.

Syntax

returnValue = range.comparePoint(referenceNode, offset)

Parameters

referenceNode: The Node to compare with the Range.
offset: An integer greater than or equal to zero representing the offset inside the referenceNode.

Example

range = document.createRange();
range.selectNode(document.getElementsByTagName('div').item(0));
returnValue = range.comparePoint(document.getElementsByTagName('p').item(0), 1);

Specifications

Specification
DOM Standard (DOM) # ref-for-dom-range-comparepoint①

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`comparePoint`	1	17	1	No	≤12.1	3	1	18	4	≤12.1	1	1.0