What are the benefits of closures?

What are the benefits of using closures in JavaScript?

Closures allow you to encapsulate variables, maintain state, and create private functions, enhancing modularity.

Can you give me an example of how closures work?

Sure! Here's a simple example: function outer() { let count = 0; return function inner() { count++; return count; }; } The inner function has access to the count variable even after outer has finished executing.

Are there any performance implications of using closures?

Yes, closures can lead to increased memory usage since they keep references to their outer scope. However, they can also optimize performance by reducing the need for global variables.

When should I avoid using closures?

Avoid closures when you don't need to maintain state or when performance is critical, as they can introduce overhead.