freeCodeCamp/curriculum/challenges/korean/02-javascript-algorithms-and-data-structures/basic-javascript/use-bracket-notation-to-find-the-nth-to-last-character-in-a-string.md

id, title, challengeType, videoUrl, forumTopicId, dashedName

id	title	challengeType	videoUrl	forumTopicId	dashedName
bd7123c9c452eddfaeb5bdef	Use Bracket Notation to Find the Nth-to-Last Character in a String	1	https://scrimba.com/c/cw4vkh9	18344	use-bracket-notation-to-find-the-nth-to-last-character-in-a-string

--description--

You can use the same principle we just used to retrieve the last character in a string to retrieve the Nth-to-last character.

For example, you can get the value of the third-to-last letter of the const firstName = "Augusta" string by using firstName[firstName.length - 3]

Example:

const firstName = "Augusta";
const thirdToLastLetter = firstName[firstName.length - 3];

thirdToLastLetter would have a value of the string s.

--instructions--

Use bracket notation to find the second-to-last character in the lastName string.

Hint: Try looking at the example above if you get stuck.

--hints--

secondToLastLetterOfLastName should be the letter c.

assert(secondToLastLetterOfLastName === 'c');

You should use .length to get the second last letter.

assert(__helpers.removeJSComments(code).match(/\.length/g).length > 0);

--seed--

--after-user-code--

(function(v){return v;})(secondToLastLetterOfLastName);

--seed-contents--

// Setup
const lastName = "Lovelace";

// Only change code below this line
const secondToLastLetterOfLastName = lastName; // Change this line

--solutions--

const lastName = "Lovelace";
const secondToLastLetterOfLastName = lastName[lastName.length - 2];