gistfile1.js

function codeAddress(){
var geocoder,latLng;
geocoder = new google.maps.Geocoder();
    var address = document.getElementById('address').value;
    geocoder.geocode( { 'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        latLng=results[0].geometry.location;
        document.getElementById("address").value = latLng;
      } else {
        alert('Geocode was not successful for the following reason: ' + status);
      }
    });
  }