JavaScript LinkedList Improved

gistfile1.js

function LinkedList(){
  this.head = null; // can be replaced with class or model (to have strong type)
	this.tail = null;
	var count = 0;
	this.AddFirst = function(node){

		//Save off the head node so we dont lose it
		var temp = this.head;

		//Point head to the new node
		this.head = node;

		//Insert the rest of the list behind the head
		this.head.next = temp;		 
		count++;

		if( count == 1){
			this.tail = this.head;
		}

	};
	this.AddLast = function( node ){
		if( this.tail ){ // Set the previous node with current
			this.tail.next = node;
		}else{ // first time to set the pointer to head
			this.head = node;
		}
		//Reset to the current node
		this.tail = node;
 	};

 	this.removeFirst = function(){
 		if( this.head ){
 			this.head = this.head.next;
 		}
 	};

 	this.removeLast = function(){
 		var current = this.head;
 		while( current.next != this.tail ){
 			current = current.next;
 		}
 		current.next = null;
 		this.tail = current;
 	}
}