
Codewars
Exercism
LeetCode
CodinGame
CodeCombat
HackerRank
Codecademy
CheckIO is a web site with a mission: To teach JavaScript and Python coding skills through a game-playing interface. It is designed to teach new skills or improve existing skills through completing challenges.

Python
Java
PHP
Rust
Haskell
Typescript
Elixir
Lightweight, interpreted, object-oriented language with first-class functions
Which is more popular?
Based on our record, CheckIO seems to be more popular. It has been mentioned 46 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | checkio.org | developer.mozilla.org |
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In their own words, as submitted to SaaSHub.


No description of CheckIO yet.
We recommend LibHunt JavaScript for discovery and comparisons of trending JavaScript projects.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of JavaScript yet.
Walkthroughs and reviews on video.
Intro Video. How to get maximum from CheckiO
Learn JavaScript in 7 minutes | Create Interactive Websites | Code in 5
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CheckIO and JavaScript. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


CheckiO is a platform with coding games created for different levels of programmers, from beginners to advanced levels. Using fun and engaging methods, you can use coding games to solve challenges in TypeScript and...
CheckIO is available in English and Spanish. The platform was designed by a group of engineers and now has a number of customers all over the globe who may use it to improve their programming speed and abilities by...
Checkio is the most whimsical HackerRank alternative on this list. It’s also focused on two languages: Python and TypeScript. On this site you’ll be thrown into a gamer’s paradise that includes robot mollusks and...
In simple words, the main goal of JavaScript is to develop web pages and is used for authentication procedures. Some of the pros of using JavaScript as an alternative to Rust are follows.
ExtJS, as the name suggests, stands for Extended JavaScript. As an offering from Sencha, it depends on YahooUserInterface. ExtJS helps in creating data intensified HTML5 apps with JavaScript. It consists of a huge...
JavaScript skills are always in high demand – most of the world's top websites and apps rely on JavaScript in one way or another. Plus, JavaScript is a great springboard for learning more complex programming languages.
Recommendations tracked on public social media and blogs since March 2021.


Have you heard of CheckIO (https://checkio.org/)? They have a gameified "Mario world" of coding challenges that are smaller and come with more explanation, tests to guide you through edge cases and provide hints. The challenges start... Source: almost 3 years ago
Cyber isn't gonna be a light switch, where you can flip it and be good. Don't be too hard on yourself. Start with some hands on stuff like https://tryhackme.com or checkio.org. You could look at certs like Security+ or CySA+ for some... Source: over 3 years ago
Much better to get your hands dirty than watching the videos. Try: https://checkio.org/. Source: over 3 years ago
Tracking JavaScript since Mar 2021.
When comparing CheckIO and JavaScript, you can also consider the following products.


Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Compare Python to CheckIO or JavaScript:

Download and solve practice problems in over 30 different languages.
Compare Exercism to CheckIO or JavaScript:

A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Compare Java to CheckIO or JavaScript:

Practice and level up your development skills and prepare for technical interviews.
Compare LeetCode to CheckIO or JavaScript:

A popular general-purpose scripting language that is especially suited to web development
Compare PHP to CheckIO or JavaScript: