View difference between Paste ID: CWXWcmkS and sUKCs55m

 function countThreeSeconds() {
     return $.Deferred(function(def){
         var counter = 0,
         timer = setInterval(function () {
 
             if (counter == 3) {
                 console.log("All done. That was three seconds.");
                 window.clearInterval(timer);
-                deferred.resolve();
+                def.resolve();
 
             } else {
                 console.log("Not there yet. Counter at: " + counter);
-                deferred.notify(counter);
+                def.notify(counter);
             }
             counter++;
         }, 1000);
     }).promise();
 
 }