Forward Geocoding in javascript - useful in Titanium which restricts the Ti.API.forwardGeocoder method to the US.

gistfile1.js

var forwardGeoCoder = function(address, callback) {
  xhr = Titanium.Network.createHTTPClient();
  var url = 'http://maps.googleapis.com/maps/api/geocode/json?sensor=false&address=' + address;
  xhr.open('GET', url);
  xhr.onload = function() {
    var json = JSON.parse(this.responseText);
    if (json.results.length > 0) {
      var latitude = json.results[0].geometry.location.lat;
      var longitude = json.results[0].geometry.location.lng;
      callback(latitude, longitude);
    }
  };
  xhr.send();
}

Example use:

// guess there's a "textField" Ti.UI.TextField in the application
forwardGeoCoder(textField.value, function(latitude, longitude) {
  // create a Ti.Map.View
  var map = Titanium.Map.createView({
    mapType: Titanium.Map.STANDARD_TYPE,
    region: {
      latitude:latitude,
      longitude:longitude,
      latitudeDelta:0.01,
      longitudeDelta:0.01
    },
    animate:true,
    regionFit:false,
    userLocation:false,
    top: 60
  });

  // add the map to the current view
  self.add(map);
});