Delay keyup in Jquery

gistfile1.txt

*** executing a function after the user has stopped typing for a specified amount of time ***
*** From http://stackoverflow.com/questions/1909441/jquery-keyup-delay ***

var delay = (function(){
  var timer = 0;
  return function(callback, ms){
    clearTimeout (timer);
    timer = setTimeout(callback, ms);
  };
})();

Usage:

$('input').keyup(function() {
    delay(function(){
      alert('Time elapsed!');
    }, 1000 );
});