How retrieve latitude and longitude via Google Maps API?

Question

How retrieve latitude and longitude via Google Maps API?

Answer 1

With API v3

google.maps.event.addListener(map, 'click', function(event) {
   alert( 'Lat: ' + event.latLng.lat() + ' and Longitude is: ' + event.latLng.lng() );
});

Likewise you can retrieve when a marker is dragged dropped :

google.maps.event.addListener(marker, 'dragstart', function(event) {
   alert( 'Lat: ' + event.latLng.lat() + ' and Longitude is: ' + event.latLng.lng() );
});

Answer 2

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 3

I have found the result via the following method:

http://maps.googleapis.com/maps/api/geocode/json?address=woking&sensor=false

  console.log(response.results[0].geometry.viewport.northeast.lat);
  console.log(response.results[0].geometry.viewport.northeast.lng);