Geolocation.clearWatch()

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

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!

請參考

• Using geolocation
• Geolocation
• Geolocation.watchPosition()
• Geolocation.getCurrentPosition()