Cycle things with javascript

cycle.html

<i>1</i>
<i>2</i>
<i>3</i>
<i>4</i>
<i>5</i>
<i>6</i>

cycle.js

http://jsfiddle.net/tthd93c3/

function set(n){
  for ( i of n ){
    i.style.transition="300ms ease-in 40ms";
    i.style.opacity="0";
  }
}

function cycle(n){
		n.push(n[0]);
		  n[0].style.opacity="1";
  window.setTimeout(function(){
    n[0].style.opacity="0";
    n.shift(); 
    cycle(n);
  },1500);
}

var n = Array.prototype.slice.call(document.querySelectorAll('i'));
set(n);
cycle(n);