What are the best practices for using block scope in JavaScript?

What are the best practices for using block scope in JavaScript?

Using block scope effectively can help prevent variable hoisting issues. Always use let or const instead of var.

Can you explain why let and const are preferred over var?

Certainly! let and const are block-scoped, meaning they only exist within the nearest enclosing block, reducing errors.

Are there any specific scenarios where block scope is particularly useful?

Yes, block scope is especially useful in loops and conditionals, where you want to limit the variable's visibility.

How does block scope affect closures in JavaScript?

Block scope can help create closures that capture the correct variable values, avoiding common pitfalls with var.