Dev tools · alternatives · 2026

24 alternatives to JS Koans

Teach you Javascript programming through testing.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. JS Koans launched in 2014; newer entries below may have overtaken it.

1. 1
   JavaScript Quiz▲190

   Check your JS knowledge by having fun.

   2021 · javascriptquiz.com · its alternatives →

2. 2
   JavaScript.com▲217

   A free resource for learning and developing in JavaScript

   2015 · javascript.com · its alternatives →

3. 3JL
   jsdares – learning programming visually▲177

   Experimental educational programming environment. Learn Javascript and create your own dares!

   2013 · jsdares.com · its alternatives →

4. 4
   Learn and practice modern JavaScript▲305

   Learn JavaScript is the easiest, most interactive way to learn & practice modern JavaScript online. Read short lessons, solve challenges & answer flashcards.

   2019 · learnjavascript.online · its alternatives →

5. 5
   Understanding ES6▲71

   Get started with the new Javascript

   2016 · leanpub.com · its alternatives →

6. 6
   Do you speak JavaScript?▲69

   Elevate your JavaScript knowledge

   2023 · daskalo.dev · its alternatives →

7. 7
   A Repo of JavaScript Coding Challenges▲127

   Some basic javascript coding challenges and interview questions - kolodny/exercises

   2015 · github.com · its alternatives →

8. 8
   JavaScript & jQuery▲68

   A beautiful and simple instructional book.

   2014 · its alternatives →

9. 9
   You Don't Know JS: Up & Going▲128

   Get a more complete understanding of JavaScript

   2016 · github.com · its alternatives →

10. 10
    JSFiddle▲107

    Test and share JavaScript, CSS, HTML or CoffeeScript online.

    2014 · jsfiddle.net · its alternatives →

11. 11
    CodeCombat▲143

    Learn to Code JavaScript by Playing a Game

    2014 · codecombat.com · its alternatives →

12. 12
    ES6 For Everyone!▲16

    The Best Way To Learn Modern JavaScript

    2016 · es6.io · its alternatives →

13. 13
    JSQuestions▲85

    Most unique JavaScript & Next.js interview questions

    2022 · its alternatives →

14. 14
    Eloquent JavaScript ▲149

    Free ebook for the JS Beginners

    2016 · eloquentjavascript.net · its alternatives →

15. 15
    JavaScript Air - 22: The Science of People in Tech▲65

    What you can do to improve your workspace and community

    2016 · javascriptair.com · its alternatives →

16. 16
    Simplified JavaScript Jargon▲137

    Community-driven explanation of JavaScript buzz words

    2016 · jargon.js.org · its alternatives →

17. 17
    Website Starter Kit from Glitch▲134

    Learn HTML, JS, CSS & Node.js w/ free videos & live code

    2018 · blog.glitch.com · its alternatives →

18. 18
    Jest 16▲85

    Painless JavaScript testing with Jest 16

    2016 · facebook.github.io · its alternatives →

19. 19
    JS++▲6

    JavaScript Classes, Modules, Type Checking

    2016 · onux.com · its alternatives →

20. 20
    Modular JavaScript▲67

    Let's write robust, well-tested, modular JavaScript code.

    2016 · rajabandotind.com · its alternatives →

21. 21
    Eloquent Javascript▲20

    A modern introduction to Javascript

    2014 · eloquentjavascript.net · its alternatives →

22. 22
    ThatJSDude▲21

    The easiest and funniest way to understand JavaScript

    2014 · thatjsdude.com · its alternatives →

23. 23
    Breakouts▲73

    Helping you choose a JavaScript game engine

    2015 · its alternatives →

24. 24
    JavaScripting▲74

    Ranking of top JavaScript libraries, frameworks, and plugins

    2015 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →