Javascript访问列表中的嵌套对象

Question

I am pretty brand new to coding so please excuse me if this is too much of a basic question. I am going through the challenges on codewars.com to try to increase my coding aptitude. The one I am currently working on has the following prompt:

Lists are data structures composed of nested objects, each containing a single value and a reference to the next object.Write a function listToArray (or list_to_array in Python) that converts a list to an array.

The issue I am having is with the lists. They are nested and keep nesting. My question is how do I access the value for each object if it is nested further and further? I believe if I can figure out how to access the values I should be able to create the array pretty easily. Thanks in advance!

List example: {value: 1, next: {value: 2, next: {value: 3, next: null}}}

Desired final result: [1, 2, 3]

What I have thus far:

 function listToArray(list) { var arr; for (var i in list) { arr += list [i]; i++; } // return arr; } var list1 = {value: 1, next: {value: 2, next: {value: 3, next: null}}}; listToArray(list1) 

Answer 1

With lists, you usually use while loops to iterate.

function listToArray(list) {
  var arr = [];
  while(list !== null) {
    arr.push(list.value);
    list = list.next;
  }
  return arr;
}