Where can I practice JavaScript?

[SwatiSood]

Learn some JavaScript and practice coding so you can pick up the syntax at this stage.
...
fairly well.
Code School. Great for beginners. ...
Codecademy. For complete beginners that are initially learning a language. ...
freeCodeCamp. ...
Treehouse.

[Guest]

JavaScript Coding Challenges List
Exercism.io.
TopCoder.
SPOJ.
Scotch.io.
Codewars.
HackerRank.
LeetCode.
CodinGame.

[lisajohn]

JavaScript is one of the most commonly used programming languages in the world. It's easy to learn and perfect for creating dynamic web pages and applications. However, JavaScript isn't the only language that can be used to create these types of programs. Plenty of other languages are available, including but not limited to: Java, Python, Ruby, and Android. Which language you choose to use depends on your specific needs and preferences.