Kata Library: JavaScript Practice
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
22
Arrays
9
Binary
23
Bits
48
Cryptography
1
Data Structures
1
Esoteric Languages
1
Fundamentals
22
Games
1
Interpreters
1
Lists
2
Logic
2
Mathematics
6
Networks
3
Parsing
2
Performance
1
Puzzles
3
Recursion
1
Refactoring
1
Reflection
1
Regular Expressions
1
Riddles
1
Security
2
Sets
1
Sorting
2
Strings
8
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
48 Kata Found
7 kyu
Interlocking Binary Pairs
3,591
rowcased
Binary
Bits
Algorithms
7 kyu
Delta Bits
3,753
ykagan
1 Issue Reported
Bits
Binary
Algorithms
6 kyu
Bit Counting
256,685
xcthulhu
1 Issue Reported
Bits
Algorithms
7 kyu
Bits Battle
2,255
vpop
1 Issue Reported
Fundamentals
Binary
Bits
5 kyu
int32 to IPv4
28,592
sahglie
Networks
Bits
Algorithms
7 kyu
Regexp Basics - is it a eight bit signed number?
1,026
taw
3 Issues Reported
Bits
Binary
Strings
Regular Expressions
Fundamentals
7 kyu
Sort by binary ones
1,179
guumaster
Arrays
Lists
Algorithms
Sorting
Binary
Bits
6 kyu
Boolean function truth table
360
trashy_incel
Bits
Binary
Reflection
5 kyu
Count Obeying Bitmasks In The Range
31
Jomopipi
Mathematics
Binary
Bits
5 kyu
Simple Fun #266: K Bits Digits
108
myjinxin2015
1 Issue Reported
Algorithms
Bits
Binary
5 kyu
7-segment converter
706
wthit56
Binary
Bits
Fundamentals
7 kyu
Shared Bit Counter
2,440
Anarki
Fundamentals
Binary
Bits
6 kyu
Even Gray Code
138
brodiemark
Bits
7 kyu
Is There an Odd Bit?
2,553
mtruong1999
1 Issue Reported
Bits
Fundamentals
6 kyu
Binary string
903
ssineriz
1 Issue Reported
Bits
Binary
Algorithms
6 kyu
IPv4 Parser
621
icaruspassion
2 Issues Reported
Networks
Binary
Bits
Mathematics
Algorithms
7 kyu
Extract bits from integer
191
MacStan
Bits
5 kyu
Simple Encryption #3 - Turn The Bits Around
270
user5036852
Cryptography
Security
Strings
Algorithms
Bits
7 kyu
Find the number of trailing zeros, in its binary representation , of a number.
978
anudeep7150
1 Issue Reported
Logic
Bits
6 kyu
Adding Binary Numbers
1,379
DivyanshBatham
1 Issue Reported
Binary
Bits
Fundamentals
6 kyu
Esolang: MiniBitMove
998
user2514386
2 Issues Reported
Interpreters
Strings
Arrays
Bits
Esoteric Languages
Fundamentals
7 kyu
Bus mastering - Who is the most prioritary?
1,062
marrakchino
3 Issues Reported
Strings
Fundamentals
Bits
6 kyu
What's Your Poison?
1,150
Tandyman
2 Issues Reported
Puzzles
Riddles
Algorithms
Bits
Fundamentals
6 kyu
World Bits War
1,399
GiacomoSorbi
Bits
Binary
Arrays
Fundamentals
7 kyu
Simple Fun #8: Kill K-th Bit
1,850
myjinxin2015
1 Issue Reported
Puzzles
Bits
Binary
6 kyu
The OR sum
72
Yushi.py
Mathematics
Bits
Performance
5 kyu
Bit calculator
2,128
riomus
4 Issues Reported
Bits
Mathematics
Algorithms
7 kyu
Simple Fun #10: Range Bit Counting
3,793
myjinxin2015
1 Issue Reported
Bits
Binary
Algorithms
6 kyu
Error correction #1 - Hamming Code
3,642
zLuki
Algorithms
Bits
7 kyu
Reverse the bits in an integer
6,649
mystery
Bits
Fundamentals
Loading...
Confirm
Collect:
undefined
Loading collection data...