Facebook Graph API

HTML

<html>
  <body>
    <div id="output">BorkBorkBork</div>
  </body>
</html>

JavaScript

var facebookGraphURL = 'https://graph.facebook.com/249460512564976';
$.ajax({
        url: facebookGraphURL,
        dataType: 'json',
        success: function(data, status) {
          $( '#output' ).html('Username: ' + data.username);
      },
      error: function(data, e1, e2) {
        $( '#output' ).html(e2);
      }
   })