Google URL Shortener

gistfile1.js

var request = new XMLHttpRequest();
request.onreadystatechange = function() {
  if (request.readyState == 4) {
    if (request.status == 200) {
      console.log(request.responseText);
    } else {
      console.log('error!! status code:' + request.status);
    }
  }
};

request.open(
  'POST',
  'https://www.googleapis.com/urlshortener/v1/url?key={your API Key}',
  true);

request.setRequestHeader('Content-Type', 'application/json');
request.send("{'longUrl': 'http://www.google.com/'}");