What are some common mistakes when using useEffect in React?

What are some common mistakes when using useEffect in React?

Some common mistakes include not specifying dependencies, causing infinite loops, and misunderstanding cleanup functions.

Can you explain what happens if I forget to add dependencies?

If you forget to add dependencies, the effect may not run when it should, leading to stale data or unexpected behavior.

What is the purpose of the cleanup function in useEffect?

The cleanup function is used to clean up resources or subscriptions before the component unmounts or before the effect runs again.

How can I avoid infinite loops with useEffect?

To avoid infinite loops, ensure that you correctly specify dependencies and avoid updating state inside the effect without proper checks.

Are there any best practices for using useEffect?

Yes, some best practices include keeping effects focused, using multiple useEffect hooks for different concerns, and always specifying dependencies.