Question

Possible Duplicate:
Reverse Geocode On Google Maps api v3

I want to find the address by using lat-lang value for that I’m using new google.maps.Geocoder().geocode()
following is the implementation of the method

function checkAddress(){
  var address="";
  var amstr = new google.maps.LatLng(37.556179,-122.288219);
  address = getAddress(amstr);
  alert(address);

}

function getAddress(latLng) {
    var geocoder = new google.maps.Geocoder();
        geocoder.geocode( {'latLng': latLng},
        function(results, status) {
         if(status == google.maps.GeocoderStatus.OK) {
          if(results[0]) {            
        return results[0].formatted_address;
          }
          else {
            return "No results";
          }
        }
        else {
          return "not working";
        }
      });
    }

but after running above code I’m getting ‘undefined’ as result.
Please tell me where I’m doing it wrong.

Thanks

Answer 1

geocoder.geocode() is asynchronous. It only calls your callback some time after the rest of your code finishes.

You need to return the value in a callback:

function getAddress(latLng, callback) {
    ...
    geocoder.geocode(..., function(...) {
        ...
        callback(someValue);
    });
}