shorten a given URL using goog.gl

gistfile1.js

function getShortURL(url)
{
    return jQuery.ajax({
                       'type': 'POST',
                       'url': "https://www.googleapis.com/urlshortener/v1/url",
                       'contentType': 'application/json',
                       'data': JSON.stringify({"longUrl" : url}),
                       'success': function(data){console.log(data.id)}
                       });
}