find the first node in a linked list in javascript

index.tsx
class Node {
  constructor(data) {
    this.data = data;
    this.next = null;
  }
}

class LinkedList {
  constructor() {
    this.head = null;
  }

  // method to add nodes to the linked list
  addNode(data) {
    const newNode = new Node(data);
    if (this.head === null) {
      this.head = newNode;
    } else {
      let currentNode = this.head;
      while (currentNode.next !== null) {
        currentNode = currentNode.next;
      }
      currentNode.next = newNode;
    }
  }
}

const list = new LinkedList();
list.addNode("A");
list.addNode("B");
list.addNode("C");

// Access the first node (head) of the linked list:
console.log(list.head);
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