When should I use map vs filter in JavaScript?

Can you explain when to use map versus filter in JavaScript?

Sure! Use map when you want to transform each element in an array, and filter when you want to select elements based on a condition.

Can you give me an example of using both?

Of course! If you have an array of numbers and want to double them, use map. If you want to get only the even numbers, use filter.

What if I want to do both in one go?

You can chain them! First, use filter to get the even numbers, then use map to double those numbers.

That makes sense! Are there performance considerations?

Yes, chaining can be less efficient than a single loop, so consider the size of your data and the operations you're performing.