1.7 KiB
1.7 KiB
id | title | challengeType | videoUrl | forumTopicId | dashedName |
---|---|---|---|---|---|
bd7123c9c549eddfaeb5bdef | Use Bracket Notation to Find the First Character in a String | 1 | https://scrimba.com/c/ca8JwhW | 18341 | use-bracket-notation-to-find-the-first-character-in-a-string |
--description--
Bracket notation is a way to get a character at a specific index within a string.
Most modern programming languages, like JavaScript, don't start counting at 1 like humans do. They start at 0. This is referred to as Zero-based indexing.
For example, the character at index 0 in the word Charles
is C
. So if const firstName = "Charles"
, you can get the value of the first letter of the string by using firstName[0]
.
Example:
const firstName = "Charles";
const firstLetter = firstName[0];
firstLetter
would have a value of the string C
.
--instructions--
Use bracket notation to find the first character in the lastName
variable and assign it to firstLetterOfLastName
.
Hint: Try looking at the example above if you get stuck.
--hints--
The firstLetterOfLastName
variable should have the value of L
.
assert(firstLetterOfLastName === 'L');
You should use bracket notation.
assert(code.match(/firstLetterOfLastName\s*=\s*lastName\s*\[\s*\d\s*\]/));
--seed--
--after-user-code--
(function(v){return v;})(firstLetterOfLastName);
--seed-contents--
// Setup
let firstLetterOfLastName = "";
const lastName = "Lovelace";
// Only change code below this line
firstLetterOfLastName = lastName; // Change this line
--solutions--
let firstLetterOfLastName = "";
const lastName = "Lovelace";
// Only change code below this line
firstLetterOfLastName = lastName[0];