無法從此代碼中獲取緯度和經度

Question

爲什麼我無法獲得此代碼的座標？

錯誤是：ReferenceError: Can't find variable: card_Latitude。

我把代碼從這裏：How to get longitude and latitude of a city/country inputted through an input box?

我不明白爲什麼。

<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script> 
<script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script> 
<script> 
    var card_FullAddress = "Canada"; 

    var geocoder = new google.maps.Geocoder(); 
    geocoder.geocode({ 
     'address': card_FullAddress 
    }, function(results, status) { 
     if (status == google.maps.GeocoderStatus.OK) { 
      var card_Latitude = results[0].geometry.location.lat(); 
      var card_Longitude = results[0].geometry.location.lng(); 
     } else { 
      var card_Latitude = "ERR"; 
      var card_Longitude = "ERR"; 
     } 
    }); 

    console.log(card_Latitude); 
    console.log(card_Longitude); 
</script> 

JS FIDDLE

Answer 1

var card_FullAddress = "Canada"; 

var geocoder = new google.maps.Geocoder(); 
geocoder.geocode({ 
    'address': card_FullAddress 
}, function(results, status) { 
    if (status == google.maps.GeocoderStatus.OK) { 
     var card_Latitude = results[0].geometry.location.lat(); 
     var card_Longitude = results[0].geometry.location.lng(); 

     //Lat and long are only available in this scope! continue your code here! 
     console.log(card_Latitude); 
     console.log(card_Longitude); 
    } else { 
     var card_Latitude = "ERR"; 
     var card_Longitude = "ERR"; 
    } 
});