Functional Programming (FP) is a paradigm in programming that treats computation as the evaluation of mathematical functions and avoids changing state and mutable data. In JavaScript, functional programming techniques are increasingly popular because they help write cleaner, more maintainable, and scalable code. This blog will introduce you to key concepts of functional programming and how you can use them in JavaScript.

Functional programming is based on the idea that programs should be constructed using pure functions, immutability, and higher-order functions. It emphasizes declarative code and minimizes side effects. FP helps make code more predictable, testable, and easier to reason about.

function add(a, b) { return a + b; }