Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The GeolocationCoordinates.altitudeAccuracy read-only property is a strictly positive double representing the accuracy, with a 95% confidence level, of the altitude expressed in meters. This value is null if the implementation doesn't support measuring altitude.
Syntax
let altAcc = geolocationCoordinatesInstance.altitudeAccuracy
Value
A positive double representing the accuracy, with a 95% confidence level, of the altitude expressed in meters.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Geolocation API The definition of 'GeolocationCoordinates.altitudeAccuracy' in that specification. |
Recommendation | 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
altitudeAccuracy | Chrome Full support 5 | Edge Full support 12 | Firefox Full support 3.5 | IE Full support 9 | Opera
Full support
16
| Safari Full support 5 | WebView Android Full support 37 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android
Full support
16
| Safari iOS ? | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown