Traversing a linked list data structure is a common interview question. Today, we’ll explore how to do so in JavaScript.

The Linked List Data Structure

An example of a linked list is an ordered list of numbers. For example:

5 -> 3 -> 10

In JavaScript, a linked list tends to be represented as an object with a value and a reference to the next item in the list. Our aforementioned list of numbers could be represented as follows:

const linkedList = {
  val: 5,
  next: {
    val: 3,
    next: {
      val: 10,
      next: null,
    },
  },
};

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