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Range.setStartBefore

The Range.setStartBefore() method sets the start position of a Range relative to another Node. The parent Node of the start of the Range will be the same as that for the referenceNode.

Syntax

range.setStartBefore(referenceNode);

Parameters

referenceNode: The Node before which the Range should start.

Example

var range = document.createRange();
var referenceNode = document.getElementsByTagName("div").item(0);

range.setStartBefore(referenceNode);

Specifications

Specification	Status	Comment
DOM The definition of 'Range.setStartBefore()' in that specification.	Living Standard	No change.
Document Object Model (DOM) Level 2 Traversal and Range Specification The definition of 'Range.setStartBefore()' in that specification.	Obsolete	Initial specification.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	4	9	9	Yes