gistfile1.txt

(function(scope) {
  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);