Create a Doubly Linked List solution is wrong

[yhl3051]

freeCodeCamp Challenge Guide: Create a Doubly Linked List

Create a Doubly Linked List Solutions

Solutions 1 (Click to Show/Hide)

var Node = function(data, prev) { this.data = data; this.prev = prev; this.next = null; }; var DoublyLinkedList = function() { this.head = null; this.tail = null; // Only change code below this line this.add = function (data) { let node = new Node(data, this.tail); if (!this.head) { this.head = node; this.tail = node; } else { let tempNode = this.tail; tempNode.next = node; …

It doesn’t work at all when I tried inputting it

[CactusWren2020]

Interesting. It doesn’t have the requested methods in them.

by the way, what course is that from?

[ILM]

this seems for an old version of the challenge, so it is outdated.
Do you want to suggest a solution for it?
Otherwise I will just reverted the guide to be a stub waiting for content

it’s from the Interview Prep section @CactusWren2020

[yhl3051]

I would say revert it to a stub for now, I will add a possible solution later

[JeremyLT]

Please do not revive old threads to cross link your solutions.