Understanding JavaScript Closures: A Practical Guide with Examples

JavaScript is packed with powerful features, and one of the most fundamental yet often confusing concepts is closures. If you've ever encountered a function inside another function and wondered how it retains access to its parent’s variables, you're dealing with a closure.

In this blog, we'll break down closures with a real-world analogy, explain their technical workings, and provide practical code examples to solidify your understanding.

?? What is a Closure?

A closure is a function that remembers the variables from its outer scope even after the outer function has finished executing.

?? Real-World Analogy

Imagine you work at a coffee shop, and your manager gives you a special discount code to use for the rest of the week. Even if your manager leaves the store, you still remember the code and can apply the discount for customers.

Similarly, in JavaScript, an inner function remembers the variables of its parent function, even if the parent function has executed and returned. See examples and tutorials on this link