React Custom Hooks vs Built-in Hooks

What are the main differences between React custom hooks and built-in hooks?

Built-in hooks are provided by React, like useState and useEffect, while custom hooks are user-defined functions that leverage built-in hooks.

Can you give me an example of a custom hook?

Sure! A simple custom hook could be useFetch, which fetches data from an API and manages loading and error states.

When should I use custom hooks instead of built-in hooks?

Use custom hooks when you need to share logic between components or when built-in hooks don't meet your specific needs.

Are there any performance implications of using custom hooks?

Generally, custom hooks are efficient, but improper usage can lead to unnecessary re-renders. Always optimize your hooks.