Challenge 1 of 8
Fizz value
Instructions
Write `fizz(n)` — return `"fizz"` when n divisible by 3, else return n as string.
Editor
IntelliSense on
// Write your code below
Module 4 of 4
mixed review
Combine variables, functions, arrays, and logic like real interview drills.
JavaScript Practice · 0/8 completed · scroll down for every challenge
Challenge 2 of 8 · Array average
Challenge 2 of 8
Array average
Instructions
Write `average(nums)` returning the mean of a non-empty number array.
Editor
IntelliSense on
// Write your code below
Challenge 3 of 8 · Count vowels
Challenge 3 of 8
Count vowels
Instructions
Write `countVowels(text)` returning how many a,e,i,o,u (case-insensitive) appear.
Editor
IntelliSense on
// Write your code below
Challenge 4 of 8 · Reverse string
Challenge 4 of 8
Reverse string
Instructions
Write `reverse(text)` that returns the reversed string.
Editor
IntelliSense on
// Write your code below
Challenge 5 of 8 · Palindrome check
Challenge 5 of 8
Palindrome check
Instructions
Write `isPalindrome(text)` returning true for strings that read the same backwards.
Editor
IntelliSense on
// Write your code below
Challenge 6 of 8 · Unique values
Challenge 6 of 8
Unique values
Instructions
Write `unique(nums)` returning a new array with duplicates removed.
Editor
IntelliSense on
// Write your code below
Challenge 7 of 8 · Clamp number
Challenge 7 of 8
Clamp number
Instructions
Write `clamp(n, min, max)` so n stays within [min, max].
Editor
IntelliSense on
// Write your code below
Challenge 8 of 8 · Title case word
Challenge 8 of 8
Title case word
Instructions
Write `capitalize(word)` returning the word with first letter uppercase.
Editor
IntelliSense on
// Write your code below
Next module