[zh-TW]: update API GeolocationCoordinates "heading" #25428
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Preview URLs (comment last updated: 2025-01-15 08:57:44) |
| @@ -1,27 +1,28 @@ | |||
| --- | |||
| title: Coordinates.heading | |||
| title: GeolocationCoordinates：heading 屬性 | |||
| short-title: heading | |||
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与英语文档相同的 short-title 可不必保留，zh-cn 的本地化指南也适用
Suggested change
| short-title: heading |
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| **`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{{domxref("Coordinates.speed")}} 為 0 度，則此值為 [`NaN`](/zh-TW/docs/Web/JavaScript/Reference/Global_Objects/NaN)。如果這個裝置無法提供這個值則回傳 null。 | ||
| {{domxref("GeolocationCoordinates")}} 介面 **`heading`** 唯讀屬性表示裝置正在行進的方向。此值以度數表示，指示裝置偏離正北方向的程度。`0` 度表示正北，方向是順時針決定的（這意味著東是 `90` 度，西是 `270` 度）。如果 {{domxref("GeolocationCoordinates.speed")}} 為 `0` 或裝置無法提供方向資訊，`heading` 為 `null`。 |
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Suggested change
| {{domxref("GeolocationCoordinates")}} 介面 **`heading`** 唯讀屬性表示裝置正在行進的方向。此值以度數表示，指示裝置偏離正北方向的程度。`0` 度表示正北，方向是順時針決定的（這意味著東是 `90` 度，西是 `270` 度）。如果 {{domxref("GeolocationCoordinates.speed")}} 為 `0` 或裝置無法提供方向資訊，`heading` 為 `null`。 | |
| {{domxref("GeolocationCoordinates")}} 介面的 **`heading`** 唯讀屬性是一個 `double` 值，表示裝置正在行進的方向。此值以度數表示，指示裝置偏離正北方向的程度。`0` 度表示正北，方向是順時針決定的（這意味著東是 `90` 度，西是 `270` 度）。如果 {{domxref("GeolocationCoordinates.speed")}} 為 `0`，或裝置無法提供方向資訊，`heading` 為 `null`。 |
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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