When comparing JavaString vs Codewars, the Slant community recommends Codewars for most people. In the question“What are the best websites to learn to code?” Codewars is ranked 15th while JavaString is ranked 43rd. The most important reason people chose Codewars is:
Algorithms, OOP, functional programming, you name it - there's a challenge class for it and in just about every language.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Covers variety of topics
Covers everything from modifiers to object oriented programming.
Pro Challenges cover all areas of programming
Algorithms, OOP, functional programming, you name it - there's a challenge class for it and in just about every language.
Pro Submit your own challenges
If you think you have a good idea for a challenge that could be added to the dojo then go add it and get feedback.
Pro Multi-language support
Users can complete code challenges in over 12 different languages.
Pro Learning gamification
Get points and increase your level by completing coding challenges.
Pro Free
Codewars is completely free to use.
Cons
Con Only touches on concepts
JavaString does a good job of introducing concepts in a straight forward way. However there is no actually projects to demonstrate the code, no interactive components, and the descriptions can be a bit bare bones. JavaString alone won't be enough to teach you concepts, only introduce them so you know what to learn.
Con Require some coding knowledge
You require some coding knowledge to get an account with code wars. The topics are limited