AbstractRange: startOffset property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.

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

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.

Example

js
let startOffset = range.startOffset;

Specifications

Specification
DOM
# ref-for-dom-range-startoffset①

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
startOffset

Legend

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Full support
Full support
Has more compatibility info.