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 |
|---|---|---|
| DOM The definition of 'startOffset' in that specification. |
Living Standard | |
| Static Range The 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.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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