How can I create custom hooks with react-spring?

How can I create custom hooks with react-spring?

You can create custom hooks in react-spring by encapsulating animation logic in a function that returns the necessary props.

Can you give me an example of a custom hook for a fade-in effect?

Sure! Here's a simple example:

import { useSpring } from 'react-spring';

const useFadeIn = (duration = 500) => {
  return useSpring({ opacity: 1, from: { opacity: 0 }, config: { duration } });
};

This hook will return a spring object that you can use to animate the opacity.

How do I use this hook in a component?

You can use it like this:

const FadeInComponent = () => {
  const fadeInProps = useFadeIn();
  return <animated.div style={fadeInProps}>Hello, World!</animated.div>;
};

What if I want to add a delay to the fade-in effect?

You can modify the useFadeIn hook to include a delay in the config:

const useFadeIn = (duration = 500, delay = 0) => {
  return useSpring({ opacity: 1, from: { opacity: 0 }, config: { duration, delay } });
};