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.

Figure 1. Functional JavaScript is available as an ebook (without DRM) from O'Reilly or as a paperback. Anyone who has followed my missives on programming have noted the varied exposure to ...

One way of doing this in JavaScript is called memoization, which is a functional programming technique used to deal with costly pure functions.

Javascript has multiple libraries implementing functional paradigms. Rust, a relative newcomer in the systems programming world, boasts many functional features.

Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run in the meantime.