Possibe error in code example

Describe the Issue

The example shows “const thirdLetter = alpha[2]”. Below that, the snippet of text says that alpha[2] should be “Y”. “thirdLetter is the string Y, lastLetter is the string C, and valueLookup is the string Y.”

Affected Page

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/using-objects-for-lookups

const alpha = {
  1:"Z",
  2:"Y",				//<--------------- thirdLetter ??
  3:"X",
  4:"W",
  ...
  24:"C",				//<--------------- lastLetter ??
  25:"B",
  26:"A"
};

const thirdLetter = alpha[2];
const lastLetter = alpha[24];

const value = 2;
const valueLookup = alpha[value];

The snippet has the below explanation in the instructions:

`thirdLetter` is the string `Y`, lastLetter is the string `C`, and `valueLookup` is the string `Y`.

Expected behavior

I believe correcting the const “thirdLetter” to “secondLetter” could be less confusing.

[jeremylt]

I like that example better. I think we should use it + the corresponding text fixes that would be needed.

[Sboonny]

Yeah, the numerical index is odd.

Does it have to be an alphabet? Is there a better, simpler example?

I can’t think of a better example to be honest, but we can use a practical one. Like how the freeCodeCamp codebase Json files structured.

const article = {
  "title": "How to create objects in JavaScript",
  "link": "https://www.freecodecamp.org/news/a-complete-guide-to-creating-objects-in-javascript-b0e2450655e8/",
  "author": "Kaashan Hussain",
  "language": "JavaScripts",
  "tags": "TECHNOLOGY",
  "createdAt": "NOVEMBER 28, 2018"
};

const articleAuthor = article[author];
const articleLink = article[link];

const value = "title";
const valueLookup = article[value];