What are the dependencies of the useEffect hook in React?

Can you explain the dependencies of the useEffect hook in React?

Sure! The dependencies array in the useEffect hook determines when the effect runs. If you include variables in this array, the effect will re-run whenever those variables change.

What happens if I leave the dependencies array empty?

If you leave the dependencies array empty, the effect will only run once when the component mounts, similar to componentDidMount.

Is it a good practice to omit the dependencies array?

Omitting the dependencies array can lead to unexpected behavior, as the effect won't respond to changes in state or props. It's best to include all relevant dependencies.

Can I use functions in the dependencies array?

Yes, you can include functions in the dependencies array, but be cautious. If the function is recreated on every render, it may cause the effect to run more often than intended.