Javascript linked list (reverse)

gistfile1.js

var Node = function(data, next) {
  this.data = data;
  this.next = next;
};

var node1 = new Node('id1', 
  new Node('id2',
    new Node('id3',
      new Node('id4')
    )
  )
);

function print(node) {
  var str = '';
  while (node) {
    str += '--> ' + node.data + ' ';
    node = node.next;
  }
  return str;
}

function reverse(head) {
  if (!head || !head.next) {
    return head;
  }
  var remaining = reverse(head.next);
  var current = remaining;
  while(current.next) {
    current = current.next;
  }
  current.next = head;
  head.next = undefined;
  console.log(print(remaining));
  return remaining;
}

console.log('---------')
console.log('BEFORE', print(node1));
reverse(node1);