The Range.setStart() method sets the start position of a Range.

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

Setting the start point below (lower in the document) the end point will result in a collapsed range with the start and end points both set to the specified start position.

Syntax

range.setStart(startNode, startOffset);

Parameters

startNode
The Node where the Range should start.
startOffset
An integer greater than or equal to zero representing the offset for the start of the Range from the start of startNode.

Example

var range = document.createRange();
var startNode = document.getElementsByTagName("p").item(2);
var startOffset = 0;
range.setStart(startNode,startOffset);

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 4IE Full support 9Opera Full support 9Safari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

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Last updated by: fscholz,