// 加载Google Loader
function loadGoogleClientLocation(callback) {
  window.google.loader.ClientLocation = null;
  
  // 创建script元素加载Google Loader
  const script = document.createElement('script');
  script.src = 'https://www.google.com/jsapi?callback=googleLoaded';
  script.onerror = function() {
    console.error('Failed to load Google Loader');
    callback(null);
  };
  document.head.appendChild(script);
  
  // 回调函数
  window.googleLoaded = function() {
    google.load('clientlocation', {
      callback: function() {
        callback(google.loader.ClientLocation);
      }
    });
  };
}

// 使用示例
loadGoogleClientLocation(function(location) {
  if (location) {
    console.log('Country: ' + location.address.country);
    console.log('Region: ' + location.address.region);
    console.log('City: ' + location.address.city);
    console.log('Latitude: ' + location.latitude);
    console.log('Longitude: ' + location.longitude);
  } else {
    console.log('Unable to determine location');
  }
});

function getClientLocation(callback) {
  const script = document.createElement('script');
  script.src = 'https://www.googleapis.com/geolocation/v1/geolocate?key=YOUR_API_KEY&callback=handleClientLocation';
  script.onerror = function() {
    callback(null);
  };
  document.head.appendChild(script);
  
  window.handleClientLocation = function(response) {
    callback(response);
    delete window.handleClientLocation;
  };
}

// 使用示例
getClientLocation(function(data) {
  if (data && data.location) {
    console.log('Latitude:', data.location.lat);
    console.log('Longitude:', data.location.lng);
    console.log('Accuracy:', data.accuracy);
  } else {
    console.log('Location not available');
  }
});