Master Functional Programming in JavaScript: Pure Functions, Currying, and More
Discover the core concepts of functional programming for JavaScript developers—including pure functions, function composition, currying, monads, functors, immutability, lazy evaluation, and Clojure-inspired patterns—through a concise, practical guide that bridges theory and real-world application.
Functional programming has recently attracted increasing attention; perhaps, like me, you have heard about it for a long time but have not practiced it yourself. This paradigm has existed for a long time, with Haskell and Lisp built upon it gaining many fans, and later object‑oriented languages such as Java and Ruby added lambda implementations to meet the demand. So, how should JavaScript developers keep up with the trend?
The author of this article has spent considerable time deeply understanding functional programming, and through this piece will gradually impart the core concepts and patterns of functional programming to you.
The following points are covered:
Pure Functions
Function Composition
Function Currying
Monads, Functors – abstract data types in functional programming
Transparency and Immutability
Lazy Evaluation
Clojure Patterns and Features
The article is packed with practical knowledge and can serve as a beginner's reference. Click “Read the original” to open the door to a new world!
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