问Google中的地理定位错误

EN

function getCoords() {
  return new Promise(function(resolve, reject) {
    if (navigator.permissions) {
      navigator.permissions.query({
        name: 'geolocation'
      }).then(function(permission) {
        switch (permission.state) {
          case 'granted':
            navigator.geolocation.getCurrentPosition(function(pos) {
              resolve(pos.coords);
            }, function(error) {
              console.error('Error Code: ' + error.code + ' - ' + error.message);
            });
            break;
          case 'prompt':
            console.info('Check Geolocation Promt.');
            navigator.geolocation.getCurrentPosition(function(pos) {
              resolve(pos.coords);
            }, function(error) {
              console.error('Error Code: ' + error.code + ' - ' + error.message);
            });
            break;
          case 'denied':
          default:
            resolve(null);
            break;
        }
      });
    } else {
      reject(new DOMError('NotImplemented', 'Permission API is not supported'));
    }
  });
}

function locate() {
  if (typeof Promise !== "undefined" && Promise.toString().indexOf("[native code]") !== -1) {
    getCoords().then(function(coords) {
      if (coords !== null) {
        console.log(coords);
        document.getElementById('coords').value = coords.latitude + ', ' + coords.longitude;
      } else {
        console.warn('No coords returned :/');
      }
    });
  } else {
    console.warn('This browser doesn\'t support geolocation.');
  }
}

<button onclick="javascript:locate()">Locate me</button>
<input type="text" id="coords" readonly/>