Web/API/AbstractRange/startOffset

The read-only startOffset property of the AbstractRange interface returns the offset into the start node of the range's start position.

Syntax

var startOffset = range.startOffset

Value

An integer value indicating the number of characters into the Node indicated by startContainer at which the first character of the range is located.

Specifications

Specification	Status	Comment
DOMThe definition of 'startOffset' in that specification.	Living Standard
Static RangeThe definition of 'startOffset' in that specification.	Editor's Draft	Initial definition.

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	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
startOffset	Chrome No support No	Edge No support 18 — 79	Firefox Full support 69	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No

Legend

Full support  

Full support

No support  

No support

AbstractRange.startOffset by Mozilla Contributors is licensed under CC-BY-SA 2.5.