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
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 compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome Full support Yes | Edge Full support Yes | Firefox Full support 4 | IE Full support 9 | Opera Full support 9 | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown