cicle.js

cicle.js

var array = [1,2,3,4,5,6];

function cicle(arr) {
  return function() {
    arr.push(arr.shift());
    return arr[arr.length -1];
  }
}

var getNext = cicle(array);

console.log(getNext());
console.log(getNext());
console.log(getNext());
console.log(getNext());

console.log(array);