javascript function iteration

next.js

(function () {
  var Next = function (arr) {
    var next = function (i) {
      return i != arr.length ? function () {
        arr[i](next(i + 1));
      } : function () {
      }
    };
    next(0)();
  };

  // node.js or commonjs support
  if (typeof exports !== "undefined") {
    if (typeof module !== "undefined" && module.exports) {
      exports = module.exports = Next;
    }
    exports.Next = Next;
  } else {
    this.Next = Next;
  }

  // amd support
  if (typeof define === 'function' && define.amd) {
    define('Next', [], function () {
      return Next;
    });
  }
}());