gistfile1.txt

Function.prototype.debounce = function (threshold, execAsap) {
 
  var func = this, timeout;
 
  return function debounced () {
   var obj = this, args = arguments;
   function delayed () {
    if (!execAsap)
     func.apply(obj, args);
     timeout = null; 
    };
 
    if (timeout)
     clearTimeout(timeout);
    else if (execAsap)
     func.apply(obj, args);
 
    timeout = setTimeout(delayed, threshold || 100); 
  };
 
}