simple linked list with traversal forward and back ward

 The bare simple sample code shows how a simple linked list works. It also traverse the linked list.

both forward and backward.  I

class linkedList {

   no: number;

   next: linkedList;

   previous : linkedList;

}

  

  

class consumer {

  head = new linkedList();

  tail = new linkedList();

  createLinkedList() {

    //initialize head

    this.head.no = 1;

    var previous = this.head;

    var current = new linkedList();

    for (var i = 3; i <= 10; i++) {

       current = new linkedList();

      current.no = i;

      previous.next = current;

      current.previous = previous;

     

      previous = current;

      

    }

    //this.head.previous = current;

    this.tail = current;

    current =  this.head;

    while(current.next != null)

    {

      console.log(current.no)

      current = current.next;

    }

    console.log(current.no)

    while(this.tail.previous != null)

    {

      console.log(this.tail.previous.no);

      this.tail = this.tail.previous;

    }

    

  }

}

var consume = new consumer();

consume.createLinkedList();

type List = {

  no: number;

  next: linkedList;

}