Question

I am using javascript for the first time.Actually i want to get the latitude and longitude of an address using java script.Can anyone guide me..

Answer 1

If you need latitude and longitude of a given adress, you can use google maps api
https://developers.google.com/maps/documentation/javascript/

Here is an example:
https://google-developers.appspot.com/maps/documentation/javascript/examples/geocoding-simple

EDIT: to display it in an alert popup:

var address = document.getElementById("address").value;
var geocoder = new google.maps.Geocoder();

geocoder.geocode( { 'address': address}, function(results, status) {
  var location = results[0].geometry.location;
  alert(location.lat() + '' + location.lng());
});