How can I optimize performance using the Effect Hook in React?

How can I optimize performance using the Effect Hook in React?

To optimize performance with the Effect Hook, you can use dependency arrays to control when effects run.

Can you explain how dependency arrays work?

Sure! The dependency array lets you specify which values the effect depends on. If those values change, the effect runs again.

What happens if I leave the dependency array empty?

If you leave it empty, the effect runs only once after the initial render, similar to componentDidMount.

Are there any performance pitfalls I should be aware of?

Yes, avoid unnecessary state updates inside effects, and be cautious with functions that create new references on every render.