在此页

• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

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.heading read-only property is a double representing the direction in which the device is traveling. This value, specified in degrees, indicates how far off from heading due north the device is. Zero degrees represents true true north, and the direction is determined clockwise (which means that east is 90 degrees and west is 270 degrees). If GeolocationCoordinates.speed is 0 , heading is NaN . If the device is not able to provide heading information, this value is null .

句法

let heading = geolocationCoordinatesInstance.heading
					

值

A double representing the direction in which the device is traveling.

规范

规范	状态	注释
地理位置 API The definition of 'GeolocationCoordinates.heading' in that specification.	推荐	最初的规范。

浏览器兼容性

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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
heading	Chrome 5	Edge 12	Firefox 3.5	IE 9	Opera 16 16 不支持 10.6 — 15	Safari 5	WebView Android 37	Chrome Android 18	Firefox Android 4	Opera Android 16 16 不支持 11 — 14	Safari iOS ?	Samsung Internet Android 1.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

另请参阅

• Using the Geolocation API
• GeolocationCoordinates

元数据

• 最后修改： Dec 10, 2019

相关话题

1. 地理位置 API
2. GeolocationCoordinates
3. 特性

   1. accuracy
   2. altitude
   3. altitudeAccuracy
   4. heading
   5. latitude
   6. longitude
   7. speed
4. Related pages for Geolocation API

   1. Geolocation
   2. GeolocationPosition
   3. GeolocationPositionError
   4. Navigator.geolocation