02_add_closure (my answer).js

gistfile1.js

var countdownRunner = function() {
	var index;

	function log(){
	  console.log(index);
	}

	function iterate(){
	  log();
	  if(index>1) setTimeout(iterate, 1000);
	  index--;
	}

	return function countdown(){
	  index = 10;
	  iterate();
	}
}();