What are immutable types in JavaScript?

Can you explain what immutable types are in JavaScript?

Sure! Immutable types are data types whose values cannot be changed after they are created. In JavaScript, strings and numbers are examples of immutable types.

Why is immutability important in programming?

Immutability helps prevent unintended side effects, making code easier to understand and debug. It also allows for safer concurrent programming.

Can you give me an example of an immutable type in JavaScript?

Absolutely! A string in JavaScript is immutable. For instance, if you try to change a character in a string, a new string is created instead.

How do immutable types affect performance?

While immutable types can lead to increased memory usage due to the creation of new instances, they can also optimize performance in certain scenarios, like in functional programming.