How do different collection types perform in JavaScript?

How do different collection types perform in JavaScript?

In JavaScript, the main collection types are Arrays, Sets, and Maps. Each has different performance characteristics depending on the operations you perform.

Can you explain the performance differences for adding and removing items?

Sure! Arrays have O(1) performance for adding/removing at the end, but O(n) for the beginning. Sets and Maps have O(1) for adding/removing items.

What about searching for items in these collections?

Searching in Arrays is O(n) in the worst case, while Sets and Maps offer O(1) average time complexity for lookups.

Which collection type should I use for a large dataset?

For large datasets, consider using Sets or Maps for better performance on lookups and unique item storage.