How do sets compare to arrays in JavaScript?

What are the main differences between sets and arrays in JavaScript?

Sets are collections of unique values, while arrays can contain duplicates. Sets also have faster lookups.

Can you give me an example of when to use a set instead of an array?

Use a set when you need to store unique items, like a list of user IDs, to prevent duplicates.

How do I convert an array to a set in JavaScript?

You can convert an array to a set using the Set constructor: const mySet = new Set(myArray);.

Are there any performance differences between sets and arrays?

Yes, sets generally offer better performance for operations like checking for existence, especially with large datasets.