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Challenges
2,421 JavaScript challenges
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Microwave Buttons
Hard
JavaScript
numbers
validation
math
Accumulating Product
Hard
JavaScript
arrays
numbers
Digital Decipher
Hard
JavaScript
cryptography
algorithms
logic
Total Sales of Product
Hard
JavaScript
arrays
data_structures
language_fundamentals
RegEx Exercise 3: Find All Numbers
Hard
JavaScript
regex
Partially Hidden String
Hard
JavaScript
arrays
strings
formatting
Shift and Multiple Validators
Hard
JavaScript
validation
higher_order_functions
Car Timer 🏎️
Hard
JavaScript
numbers
conditions
algorithms
Is It the Same Upside Down?
Hard
JavaScript
strings
sorting
numbers
Shopping for Memorial Day!
Hard
JavaScript
arrays
objects
Chemical Reactions
Hard
JavaScript
conditions
math
numbers
Factorial of Factorials
Hard
JavaScript
math
numbers
loops
RegEx Exercise 2: Find HTML Tags
Hard
JavaScript
regex
Regex Series: Canadian Postal Codes
Hard
JavaScript
strings
regex
Mini Sudoku
Hard
JavaScript
arrays
games
validation
Perfect Number
Hard
JavaScript
numbers
math
validation
Number of Two or More Consecutive Ones
Hard
JavaScript
arrays
regex
strings
Secret Function 4.0
Hard
JavaScript
strings
arrays
Evaluating Factorials
Hard
JavaScript
strings
formatting
math
Amazing Alliteration
Hard
JavaScript
strings
validation
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