Scoping example using closure

gistfile1.txt

(function(scope) {
	// Code
	var index;

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

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

	function countdown(){
	  index = 10;
	  iterate();
	};
	
	scope['countdown'] = countdown;
})(this);