When should I use objects instead of arrays in JavaScript?

When should I use objects instead of arrays in JavaScript?

You should use objects when you need to store data as key-value pairs, while arrays are better for ordered lists.

Can you give me an example of when to use each?

Sure! Use an object for storing user details like name and age, and an array for a list of user IDs.

What are the performance differences between them?

Objects are generally faster for lookups by key, while arrays are optimized for iteration and accessing elements by index.

Are there any situations where I should avoid using arrays?

Yes, avoid arrays when you need to frequently add or remove items from the beginning, as this can be slow.