What are the best practices for using useEffect in React?

What are the best practices for using useEffect in React?

When using useEffect, it's important to specify dependencies correctly to avoid unnecessary re-renders.

Can you explain how to manage dependencies in useEffect?

Sure! You should include all variables that are used inside the effect in the dependency array to ensure it runs when they change.

What happens if I leave out a dependency?

If you leave out a dependency, the effect may not run when that variable changes, leading to stale data or unexpected behavior.

Are there any performance tips for useEffect?

Yes! You can optimize performance by using the cleanup function to prevent memory leaks and by batching state updates.