Google API 客户端位置

Question

我想检测浏览器客户端位置，所以我编写了这段代码：

 if(google.loader.ClientLocation)
{
var visitor_lat = google.loader.ClientLocation.latitude; 
var visitor_lon = google.loader.ClientLocation.longitude; 
var visitor_city = google.loader.ClientLocation.address.city;
var visitor_region = google.loader.ClientLocation.address.region;
var visitor_country = google.loader.ClientLocation.address.country;
var visitor_countrycode = google.loader.ClientLocation.address.country_code;
document.getElementById('yourinfo').innerHTML = '<p>Lat/Lon: ' + visitor_lat + ' / ' + visitor_lon + '</p><p>Location: ' + visitor_city + ', ' + visitor_region + ', ' + visitor_country + ' (' + visitor_countrycode + ')</p>';
alert("Found Location");
}
else
{
// ClientLocation not found or not populated
// so perform error handling
alert("Could not find client location... ");
}

我看过许多其他网络教程，这段代码应该可以工作，但它不适合我：S。 与 Google 禁用 ClientLocation 功能有关吗？