How can I improve the performance of JavaScript collections?

How can I improve the performance of JavaScript collections?

To improve performance, consider using the right collection type. For example, use arrays for ordered data and objects for key-value pairs.

What about using Maps and Sets? Are they better?

Yes, Maps and Sets can offer better performance for certain operations, like frequent additions and deletions, due to their underlying structure.

Can you give me an example of when to use a Map over an Object?

Use a Map when you need to maintain the order of entries or when keys are not strings. For example, if you need to store user IDs as keys.

Are there any performance pitfalls I should avoid?

Avoid using large arrays with frequent index lookups, as they can lead to performance issues. Instead, consider using a Map for better efficiency.