How to use Google Maps API geocoder

gistfile1.js

var address = "Shinagawa station"
var geocoder = new google.maps.Geocoder();

geocoder.geocode({'address': address}, function (results, status) {
  if (status == google.maps.GeocoderStatus.OK) {
    var location = results[0].geometry.location;
  } else {
    alert("Unable to find address: " + status);
  }
}