List Reversal

gistfile1.js

var list =
    { head: 1,
        tail: { head: 2,
            tail: { head: 3,
                tail: { head: 4,
                    tail: { head: 5,
                        tail: null
                    }
                }
            }
        }
};

function listReverse(acc, list){
    if (list === null) return acc;
    return listReverse({head: list.head, tail: acc}, list.tail);
}

console.log(JSON.stringify(listReverse(null, list)));