freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/use-bracket-notation-to-find-the-nth-character-in-a-string.md
Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

1.4 KiB

id, title, challengeType, videoUrl, forumTopicId, dashedName
id title challengeType videoUrl forumTopicId dashedName
bd7123c9c450eddfaeb5bdef Use Bracket Notation to Find the Nth Character in a String 1 https://scrimba.com/c/cWPVJua 18343 use-bracket-notation-to-find-the-nth-character-in-a-string

--description--

You can also use bracket notation to get the character at other positions within a string.

Remember that computers start counting at 0, so the first character is actually the zeroth character.

Example:

var firstName = "Ada";
var secondLetterOfFirstName = firstName[1]; // secondLetterOfFirstName is "d"

--instructions--

Let's try to set thirdLetterOfLastName to equal the third letter of the lastName variable using bracket notation.

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

--hints--

The thirdLetterOfLastName variable should have the value of v.

assert(thirdLetterOfLastName === 'v');

You should use bracket notation.

assert(code.match(/thirdLetterOfLastName\s*?=\s*?lastName\[.*?\]/));

--seed--

--after-user-code--

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

--seed-contents--

// Setup
var lastName = "Lovelace";

// Only change code below this line
var thirdLetterOfLastName = lastName; // Change this line

--solutions--

var lastName = "Lovelace";
var thirdLetterOfLastName = lastName[2];