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Coordinates.heading

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 Status Comment
Geolocation API
The definition of 'Coordinates.heading' in that specification.
Recommendation Initial specification.

瀏覽器的相容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 5 3.5 (1.9.1) 9 10.60
No support 15.0
16.0
5
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? 4.0 (4) ? 10.60 ?

請參考

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最近更新: yachiehwu,