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Challenges
2,421 JavaScript challenges
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To Adjust the Time
Hard
JavaScript
dates
strings
formatting
ES6 Object Methods in ES5
Hard
JavaScript
objects
language_fundamentals
arrays
Find an Anagram of a String in Another String
Hard
JavaScript
strings
validation
regex
Longest Range in the List (Casual Version)
Hard
JavaScript
arrays
sorting
conditions
Print Grid
Hard
JavaScript
loops
language_fundamentals
arrays
Summation of the First n Terms
Hard
JavaScript
math
loops
Spartans Cipher
Hard
JavaScript
algorithms
cryptography
strings
Sort the Dates
Hard
JavaScript
dates
strings
sorting
Separate the Numbers
Hard
JavaScript
strings
algorithms
Shadow Sentences
Hard
JavaScript
strings
loops
validation
Carrying the Digits
Hard
JavaScript
numbers
math
control_flow
Sorting Band Names without Articles
Hard
JavaScript
arrays
regex
strings
Water Balloon
Hard
JavaScript
arrays
loops
Closest Palindrome Number
Hard
JavaScript
numbers
loops
Mangle the String
Hard
JavaScript
strings
formatting
regex
Unashamed Primes: Sexy Triplets
Hard
JavaScript
numbers
math
arrays
Oddly or Evenly Positioned From Last
Hard
JavaScript
algorithms
arrays
logic
Two Powers of Two
Hard
JavaScript
math
numbers
algorithms
Scrabble Scores (Part 1)
Hard
JavaScript
games
sorting
Valid Rondo Form?
Hard
JavaScript
strings
loops
validation
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