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Challenges
2,421 JavaScript challenges
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Split a String Based on Vowels and Consonants
Hard
JavaScript
control_flow
conditions
functional_programming
Capitalize the Last Letter
Hard
JavaScript
strings
formatting
language_fundamentals
Convert to Hex
Hard
JavaScript
loops
logic
strings
Burglary Series (08): Remove an Entry
Hard
JavaScript
objects
loops
Malthusian Catastrophe
Hard
JavaScript
conditions
dates
math
Recursion: String Palindromes
Hard
JavaScript
recursion
strings
validation
Bug: Regular Expression
Hard
JavaScript
regex
strings
bugs
Valid Variable Names
Hard
JavaScript
conditions
strings
validation
All Numbers in Array Are Prime
Hard
JavaScript
validation
math
arrays
Potential Friend?
Hard
JavaScript
language_fundamentals
arrays
validation
Wash Your Hands :)
Hard
JavaScript
numbers
math
Box Completely Filled?
Hard
JavaScript
strings
formatting
validation
Likes vs. Dislikes
Hard
JavaScript
loops
arrays
conditions
Adding Numbers
Hard
JavaScript
math
numbers
conditions
Just Find the Vertex
Hard
JavaScript
algebra
math
algorithms
Balancing Scales
Hard
JavaScript
arrays
algorithms
conditions
How Close to the Speed of Light?
Hard
JavaScript
math
algebra
physics
Hold Your Breath!
Hard
JavaScript
conditions
arrays
numbers
Narcissistic Numbers
Hard
JavaScript
numbers
language_fundamentals
validation
Common Divisor of Array
Hard
JavaScript
algebra
algorithms
math
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