What is the difference between useEffect and component lifecycle methods?

What is the difference between useEffect and component lifecycle methods?

useEffect is a Hook that lets you perform side effects in function components, while lifecycle methods are used in class components.

Can you give me an example of how useEffect works?

Sure! useEffect can be used to fetch data when a component mounts. For example:

useEffect(() => {
  fetchData();
}, []);

How do lifecycle methods compare in terms of performance?

Lifecycle methods can be more performant in class components, but useEffect provides a more concise and readable approach in functional components.

When should I use useEffect instead of lifecycle methods?

You should use useEffect when working with functional components, as it simplifies managing side effects without needing to convert to class components.