Google Maps Geocoder无法分配结果

Question

Geocoder is working fine, but i can't seem to use result.

 var naddress;
 var ngc = new google.maps.Geocoder();
 ngc.geocode({'latLng': nll}, function(results, status) {
 if (status == google.maps.GeocoderStatus.OK) {
   if (results[0]) {
    alert(results[0].formatted_address);
    naddress = results[0].formatted_address;
    }
   }
 });
alert(naddress);

It show me the correct address at first alert(), but second is blank. Am I doing something wrong?

Answer 1

There is no guarantee in which order the function passed to geocode and the first statement after the call to geocode will execute. So you either have to check to see if naddress has been assigned to yet, or put the code that needs it in the callback function.