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
Fundamentals
2
Games
11
Object-oriented Programming
1
Puzzles
7
Regular Expressions
11
Strings
2
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
11 Kata Found
6 kyu
Mahjong winning hand Validation #1: DA SI XI(大四喜)
58
myjinxin2015
Puzzles
Games
Regular Expressions
6 kyu
Single Word Pig Latin
2,179
MicheDev
4 Issues Reported
Strings
Games
Regular Expressions
6 kyu
Regex Tic Tac Toe Win Checker
1,270
tachyonlabs
Games
Regular Expressions
Fundamentals
5 kyu
Mission: Hidden Message
122
Rafa Mel
Games
Regular Expressions
Puzzles
7 kyu
The Culling of Stratholme
890
renzo.rt
Strings
Games
Regular Expressions
3 kyu
Papers, Please
807
docgunthrop
7 Issues Reported
Object-oriented Programming
Games
Regular Expressions
Fundamentals
Beta
Major Chords
23
Rafa Mel
3 Issues Reported
Status:
Testing & feedback needed
Estimated Rank:
5 kyu
Regular Expressions
Games
Puzzles
6 kyu
Mahjong winning hand Validation #5: YI SE SI BU GAO(一色四步高)
26
myjinxin2015
1 Issue Reported
Puzzles
Games
Regular Expressions
6 kyu
Mahjong winning hand Validation #4: JIU LIAN BAO DENG(九莲宝灯)
36
myjinxin2015
1 Issue Reported
Puzzles
Games
Regular Expressions
6 kyu
Mahjong winning hand Validation #3: LV YI SE(绿一色)
32
myjinxin2015
Puzzles
Games
Regular Expressions
5 kyu
Mahjong winning hand Validation #2: DA SAN YUAN(大三元)
34
myjinxin2015
3 Issues Reported
Puzzles
Games
Regular Expressions
Confirm
Collect:
undefined
Loading collection data...