When should I use const in JavaScript?

When should I use const in JavaScript?

You should use const when you want to declare a variable that won't be reassigned. It's a good practice for constants.

Can I use const for objects and arrays?

Yes, you can use const for objects and arrays, but remember that the reference is constant, not the content.

What happens if I try to reassign a const variable?

If you try to reassign a const variable, you'll get a TypeError indicating that you cannot reassign a constant.

Are there any exceptions to using const?

The main exception is that you can still modify the properties of an object or elements of an array declared with const.