How does useEffect Work?

Questions:

How does useEffect work?

This question is the understand your way of managing side effects in React as it is very crucial.

Sample Answer:

The useEffect executes after the component is rendered to the users. It is used for side effects like fetching data, subscribing to services or updating DOM.

useEffect(() => {
document.title = 'You did ${count} clicks';
}, [count]);

The dependency array (“[count]”) tells React to re-run the effect only when “count” changes.