Linked List

linked.list.js

function LinkedList() {
  this.head = null;
  this.tail = null;

  this.add = function(value) {
    var node = new Node(value);
    if (this.head == null) { this.head = node; }
    if (this.tail != null) { this.tail.next = node; }
    this.tail = node;
  };
}

function Node(value) {
  this.value = value;
  this.next = null;
}

teste.linked.list.js

var list = new LinkedList();
list.add(1);
list.add(2);
list.add(3);

console.log(list);