A ajax call to get a postal code from a geo location

jQueryGeoIp.js

var getLocation = function() {

  if (navigator.geolocation) {
    //get current position and pass the results to getPostalCode
    return navigator.geolocation.getCurrentPosition();
  } else {
    return false;
  }
    
};

var getPostalCode = function(position) {
	$.ajax({
		type: "POST",
		url: 'http://maps.googleapis.com/maps/api/geocode/json?latlng=' + position.coords.latitude + ',' + position.coords.longitude + '&sensor=true',
		dataType: "json",
		beforeSend: function(){
		// do something before the request such as show a loading image
		},
		error: function(err){
		// handle errors
		},
		success: function(data) {
			var addresses = data.results; // cache results in a local var
			$.each(addresses, function(i){ // iterate through to find a postal code
				if(this.types[0]=="postal_code"){ // check that the type is a postal code
					var postal=this['address_components'][0]['long_name']; // grab postal string
					if(postal.length > 3){ // is the result is more then 3 letter shorthand use it
						// do something with your result and then lets break the iteration
						console.log(postal);
						return false;
					}
				}
			});
		} // end success
  }); // end ajax
};


var geo = getLocation();
getPostalCode(geo);