Closure example

gistfile1.txt

// Exercise 2 - Closures
// Wrap the following code in a closure and export only the "countdown" function.

// Code

var countdown = function() {
    var index;
    
    function log(){
      console.log(index);
    }
    
    function iterate(){
      log();
      if(index>1) setTimeout(iterate, 1000);
      index--;
    }
    
    function countdown(){
      index = 10;
      iterate();
    }
    
    return countdown;
}();