A Practical Introduction to Functional Programming With JavaScript

Many¬†articles talk about advanced functional programming topics, but I want to show you simple and useful code that you can use in day-to-day developer tasks. I’ve chosen JavaScript because you can run it almost everywhere and it’s well suited for functional programming. Two of the reasons why it’s so great are that functions are first class citizens and you can create higher-order functions with it.
Higher order functions are functions that can take a function as an argument or return a function as a result. Such as the createAdd function below:

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