Geolocation.clearWatch()
這個函式是用來取消 Geolocation.watchPosition()
註冊的函式。
語法
navigator.geolocation.clearWatch(id);
參數
- 編號(id)
- 這個編號(ID) 是由
Geolocation.watchPosition()
這個函式所回傳,當你不再需要收到位置更新時,你可以用此編號,取消Geolocation.watchPosition()
的註冊。
範例
var id, target, option;
function success(pos) {
var crd = pos.coords;
if (target.latitude === crd.latitude && target.longitude === crd.longitude) {
console.log('Congratulation, you reach the target');
navigator.geolocation.clearWatch(id);
}
};
function error(err) {
console.warn('ERROR(' + err.code + '): ' + err.message);
};
target = {
latitude : 0,
longitude: 0,
}
options = {
enableHighAccuracy: false,
timeout: 5000,
maximumAge: 0
};
id = navigator.geolocation.watchPosition(success, error, options);
規格
Specification | Status | Comment |
---|---|---|
Geolocation API | Recommendation | Initial specification. |
瀏覽器的相容性
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Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 5 | 3.5 (1.9.1) | 9 | 10.60 Removed in 15.0 Reintroduced in 16.0 |
5 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | 4.0 (4) | ? | 10.60 | ? |