How retrieve latitude and longitude via Google Maps API?

Question

How retrieve latitude and longitude via Google Maps API?

Answer 1

If you need to find out the latitude and longitude of an address using the Google Maps API, you need to use the Google Maps Geocoding Service:

var map = new GMap2(document.getElementById("map_canvas"));
var geocoder = new GClientGeocoder();

var address = "1600 Amphitheatre Parkway, Mountain  View";
geocoder.getLatLng(address, function(point) {
         var latitude = point.y;
         var longitude = point.x;  

         // do something with the lat lng
    });

If you would like to get the latitude and longitude of a position clicked on your Google map, you can do this in the click event:

GEvent.addListener(map, "click", function(marker,point) {
        var latitude = point.y;
        var longitude = point.x;

        // do something with the lat/lng
    });

Answer 2

http://code.google.com/apis/maps/documentation/services.html#Geocoding