安全上下文
此特征只可用于
安全上下文
(HTTPS),在某些或所有
支持浏览器
.
GeolocationCoordinates.altitude
read-only property is a
double
representing the altitude of the position in meters, relative to sea level. This value is
null
if the implementation cannot provide this data.
let alt = geolocationCoordinatesInstance.altitude
A
double
representing the altitude of the position in meters, relative to sea level.
| 规范 | 状态 | 注释 |
|---|---|---|
|
地理位置 API
The definition of 'Coordinates.altitude' in that specification. |
推荐 | 初始定义 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
altitude
|
Chrome 5 | Edge 12 | Firefox 3.5 | IE 9 |
Opera
16
|
Safari 5 | WebView Android 37 | Chrome Android 18 | Firefox Android 4 |
Opera Android
16
|
Safari iOS ? | Samsung Internet Android 1.0 |
完整支持
兼容性未知
GeolocationCoordinates
interface it belongs to.
GeolocationCoordinates