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Higher-Order Functions Explained 🐆

Hello, JavaScript enthusiasts! 🌞

Today, let’s dive into one of JavaScript’s powerful concepts: Higher-Order Functions. This feature is a core part of JavaScript’s functional programming style, allowing for cleaner, more modular, and flexible code. Understanding higher-order functions can elevate your coding skills and make your code more expressive. Let’s break down what they are, how they work, and why they’re so useful.

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What Are Higher-Order Functions?

In JavaScript, a higher-order function is a function that either:
1. Takes one or more functions as arguments, and/or
2. Returns a function as its result.

This ability to pass functions as arguments or return them as results is a fundamental part of JavaScript’s flexibility and makes it possible to write highly reusable and abstract code.

Common Examples of Higher-Order Functions

JavaScript provides several built-in higher-order functions, especially for arrays. Let’s go over a few popular ones: