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freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/use-bracket-notation-to-find-the-nth-character-in-a-string.md
Radi Totev 4d620dea1a fix(curriculum): allow spaces before brackets (#45494)
* chore(curriculum): update regex in use-braket-notation-* tests

Update regex used in tests, so that tests are more forgiving and spaces tolerant.

* Allow for spaces within brackets
2022-03-22 13:52:13 +01:00

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:

const firstName = "Ada";
const secondLetterOfFirstName = firstName[1];

secondLetterOfFirstName would have a value of the string 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\s*\[\s*\d\s*\]/));

--seed--

--after-user-code--

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

--seed-contents--

// Setup
const lastName = "Lovelace";

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

--solutions--

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