Javascript geocoding from address to latitude and longitude numbers not working

Question

I'm using the following geocoding function to convert a textual address into latitude and longitude numbers, but it's not working right. The alert writes "undefined".

Can anyone say what's wrong?

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script> <script type="text/javascript">  var geocoder = new google.maps.Geocoder(); var address = "new york";  geocoder.geocode( { 'address': address}, function(results, status) {  if (status == google.maps.GeocoderStatus.OK) {     var latitude = results[0].geometry.location.latitude;     var longitude = results[0].geometry.location.longitude;     alert(latitude);     }  });  </script> 

Answer 1

Try using this instead:

var latitude = results[0].geometry.location.lat(); var longitude = results[0].geometry.location.lng(); 

It's bit hard to navigate Google's api but here is the relevant documentation.

One thing I had trouble finding was how to go in the other direction. From coordinates to an address. Here is the code I neded upp using. Please not that I also use jquery.

$.each(results[0].address_components, function(){     $("#CreateDialog").find('input[name="'+ this.types+'"]').attr('value', this.long_name); }); 

What I'm doing is to loop through all the returned address_components and test if their types match any input element names I have in a form. And if they do I set the value of the element to the address_components value.
If you're only interrested in the whole formated address then you can follow Google's example

Answer 2

You're accessing the latitude and longitude incorrectly.

Try

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script> <script type="text/javascript">  var geocoder = new google.maps.Geocoder(); var address = "new york";  geocoder.geocode( { 'address': address}, function(results, status) {    if (status == google.maps.GeocoderStatus.OK) {     var latitude = results[0].geometry.location.lat();     var longitude = results[0].geometry.location.lng();     alert(latitude);   }  });  </script>