C++ is better than JavaScript if you need to build applications where you must squeeze every single last drop of performance out of a single CPU. i.e. gaming, video editing software, 3D rendering ...

Python is now the fastest-growing major programming language, according to Stack Overflow.

Obviously a JVM stack developer is going to know Java. But in this world of polyglot programming, knowing a bit of JavaScript, Ruby and Scala as well is a must. In fact, it might even make you a ...

C is a great language to start out on, because a lot of other languages have borrowed directly or indirectly from it, including Java and JavaScript, C++, Python, PHP, and Perl.

This collection of resources can help you learn JavaScript at the beginner, intermediate and advanced levels.