When should I use Set in JavaScript?

When should I use Set in JavaScript?

You should use Set in JavaScript when you need a collection of unique values, like when you want to eliminate duplicates.

Can you give me an example of using Set?

Sure! If you have an array with duplicates, like [1, 2, 2, 3], you can create a Set from it: const uniqueValues = new Set([1, 2, 2, 3]); This will give you a Set with values {1, 2, 3}.

What are the performance benefits of using Set?

Sets provide faster lookups and insertions compared to arrays, especially when checking for the existence of an item.

Are there any limitations to using Set?

Yes, Sets only store unique values, so if you try to add a duplicate, it won't be added. Also, Sets are not ordered like arrays.