freeCodeCamp/use-bracket-notation-to-find-the-nth-character-in-a-string.english.md at fc1a923dd5f705a3bd82e1864b3fdac240a36d3a

Randell Dawson 3ec1fe8ea7 feat: add forumTopicId to challenge frontmatter [pre-existing]

This commit adds the pre-existing challenge guide topics in the
forum to the forntmatter of their challenge markdown files.

2019-08-05 22:14:37 +05:30

1.6 KiB

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id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
bd7123c9c450eddfaeb5bdef	Use Bracket Notation to Find the Nth Character in a String	1	https://scrimba.com/c/cWPVJua	18343

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.

Instructions

Let's try to set thirdLetterOfLastName to equal the third letter of the lastName variable using bracket notation. Hint
Try looking at the secondLetterOfFirstName variable declaration if you get stuck.

Tests

tests:
  - text: The <code>thirdLetterOfLastName</code> variable should have the value of <code>v</code>.
    testString: assert(thirdLetterOfLastName === 'v');
  - text: You should use bracket notation.
    testString: assert(code.match(/thirdLetterOfLastName\s*?=\s*?lastName\[.*?\]/));

Challenge Seed

// Example
var firstName = "Ada";
var secondLetterOfFirstName = firstName[1];

// Setup
var lastName = "Lovelace";

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

After Test

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

Solution

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

1.6 KiB Raw Blame History