freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/use-bracket-notation-to-find-the-last-character-in-a-string.english.md
Randell Dawson e0e6334628
fix(curriculum): Consolidated comments for JavaScript Algorithms and Data Structures challenges - part 3 of 4 (#38264)
* fix: remove example code from challenge seed

* fix: remove declaration from solution

* fix: added sum variable back in

* fix: reverted description back to original version

* fix: added examples to description section

* fix: added complete sentence

Co-Authored-By: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

* fix: corrected typo

Co-Authored-By: Manish Giri <manish.giri.me@gmail.com>

* fix: reverted to original desc with formatted code

* fix: removed unnecessary code example from description section

Co-Authored-By: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

* fix: failiing test on iterate through array with for loop

* fix: changed to Only change this line

Co-Authored-By: Manish Giri <manish.giri.me@gmail.com>

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Manish Giri <manish.giri.me@gmail.com>
Co-authored-by: moT01 <tmondloch01@gmail.com>
2020-03-25 16:07:13 +01:00

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Markdown

---
id: bd7123c9c451eddfaeb5bdef
title: Use Bracket Notation to Find the Last Character in a String
challengeType: 1
videoUrl: 'https://scrimba.com/c/cBZQGcv'
forumTopicId: 18342
---
## Description
<section id='description'>
In order to get the last letter of a string, you can subtract one from the string's length.
For example, if <code>var firstName = "Charles"</code>, you can get the value of the last letter of the string by using <code>firstName[firstName.length - 1]</code>.
Example:
```js
var firstName = "Charles";
var lastLetter = firstName[firstName.length - 1]; // lastLetter is "s"
```
</section>
## Instructions
<section id='instructions'>
Use <dfn>bracket notation</dfn> to find the last character in the <code>lastName</code> variable.
<strong>Hint: </strong> Try looking at the example above if you get stuck.
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>lastLetterOfLastName</code> should be "e".
testString: assert(lastLetterOfLastName === "e");
- text: You should use <code>.length</code> to get the last letter.
testString: assert(code.match(/\.length/g).length > 0);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
// Setup
var lastName = "Lovelace";
// Only change code below this line
var lastLetterOfLastName = lastName; // Change this line
```
</div>
### After Test
<div id='js-teardown'>
```js
(function(v){return v;})(lastLetterOfLastName);
```
</div>
</section>
## Solution
<section id='solution'>
```js
var lastName = "Lovelace";
var lastLetterOfLastName = lastName[lastName.length - 1];
```
</section>