JavaScript Showdown: Closures Explained + Arrow Functions vs Normal Functions - Which One Wins?

🚀 Understanding Closures in JavaScript

Closures in JavaScript are a powerful feature that allows functions to remember their lexical scope, even when they are executed outside of it. This is essential for data encapsulation, function factories, and asynchronous programming.

A closure is formed when an inner function retains access to variables from its outer function, even after the outer function has finished executing. This happens because JavaScript follows lexical scoping, meaning variables are resolved where they were written in the code, not where they are called.