It’s a programming style that rose to prominence with languages like Clojure, Scala, and Elm, but you can get into the functional mindset right within JavaScript.

Microsoft: Learn JavaScript programming language for free with our new course Programmers keen on building browser applications can take advantage of Microsoft's free JavaScript video course.

JavaScript is used by 63% of the coders surveyed, followed by Python (44%) and Java (38%). Hired said these languages were favoured because of their useful and well-maintained libraries and packages.

It’s a programming platform. Node is a way of doing programming with JavaScript, but on your computer instead of inside the Web browser so you can interact with the operating system and whatnot.