JavaScript数据结构-8.双向链表

 <!DOCTYPE html>
 <html>
     <head>
         <meta charset="UTF-8">
         <title>双向链表</title>
     </head>
     <body>
         <script>
             function Node(ele){
                 this.ele = ele;
                 this.prev = this.next = null;
             }

             function linkList(){
                 this.head = new Node("head");
                 this.find = find;
                 this.insert = insert;
                 this.findLast = findLast;
                 this.display = display;
                 this.disReverse = disReverse;
                 this.remove = remove;

             }
             function find(item){
                 var currNode = this.head;
                 while (currNode.ele != item){
                     currNode = currNode.next;
                 }
                 return currNode;
             }
             function insert(newEle,item){
                 var newNode = new Node(newEle);
                 var current = this.find(item);
                 newNode.next = current.next;
                 newNode.prev = current;
                 current.next = newNode;
             }

             function display(){
                 var currNode = this.head;
                 while(currNode.next != null){
                     console.log(currNode.next.ele);
                     currNode = currNode.next;
                 }
                 return currNode;
             }

             function findLast(){
                 var currNode = this.head;
                 while(currNode.next != null){
                     currNode = currNode.next;
                 }
                 return currNode;
             }

             function remove(item){
                 var currNode = this.find(item);
                 if(currNode.next != null){
                     currNode.prev.next =currNode.next;
                     currNode.next.prev = currNode.prev;
                     currNode.next = null;
                     currNode.prev = null;
                 }
             }

             function disReverse(){
                 var currNode = this.findLast();
                 while(currNode.prev != null ){
                     console.log(currNode.ele);
                     currNode = currNode.prev;
                 }
             }

             //测试
             var obj = new linkList();
             obj.insert("zhangsan","head");
             obj.insert("lisi","zhangsan");
             obj.insert("zhaowu","lisi");
             obj.insert("wangliu","zhaowu");
               console.log(obj.findLast());
               obj.display();
               obj.disReverse();
               obj.remove("lisi");
               obj.display();
         </script>
     </body>
 </html>