Coordinates.heading
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Coordinates.heading
是個唯讀的正複數用來代表裝置前進的方向。這個數值代表你偏離北方多少度,0 度代表你向著正北方,照著順時針的方向遞增(90 度代表正東方,270 度代表正西方)。如果Coordinates.speed
為 0 度,則此值為 NaN
。如果這個裝置無法提供這個值則回傳 null。
語法
heading = coordinates.heading
規格
Specification |
---|
Geolocation # heading-attribute |
瀏覽器的相容性
BCD tables only load in the browser
請參考
- Using geolocation
- 屬於
Coordinates
介面。