Linked List

linkedList.js

function LinkedList() {
  
  head = null;
  length = 0; 

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

  this.head = function() {
    return head;
  }
  
  this.length = function() {
    return length;
  }
  
  this.add = function(element) {
    var newNode = new Node(element);
    
    if(head === null) {
      head = newNode;
    } else {
      var currentNode = head;
      while(currentNode.next !== null) {
        currentNode = currentNode.next;
      }
      currentNode.next = newNode;
    }
    length++;
  }
  
  this.remove = function(element){
  if(head === null) {
    return “empty linked list, nothing to remove”;
  } else {
      var currentNode = head;
      if(currentNode.element === element){
        head = currentNode.next;
        length--;
        return head;
      } else {
          while(currentNode.next !== null) {
            if(currentNode.next.element === element){
              currentNode.next = currentNode.next.next;
              length--;
              return head;
            }
            currentNode = currentNode.next;
          }
       }
    }
  }

  this.find = function(element) {
    currentNode = head;
    position = 1;
    if(head === null){
      return "empty linked linked list";
    }
    else {
      if (currentNode.element === element) {
        return position;
      } else {
          while(currentNode.element !== element){
            currentNode = currentNode.next;
            position++;
          }
          if (currentNode.element === element){
            return position;
          } else {
            console.log("this hits");
            return -1;
        }
      }
    }
  }
}