useSprings
Overview
import { useSprings, animated } from 'react-spring'
Creates multiple springs, each with its own config. Use it for static lists, etc.
Either: overwrite values to change the animation
If you re-render the component with changed props, the animation will update.
const springs = useSprings(
number,
items.map((item) => ({ opacity: item.opacity }))
)
Or: pass a function that returns values, and update using the API
You will get an updater function back. It will not cause the component to render like an overwrite would (still the animation executes of course). Handling updates like this is useful for fast-occurring updates, but you should generally prefer it. Optionally there's also a stop function as a third argument.
const [springs, api] = useSprings(number, (index) => ({ opacity: 1 }))
// Update springs with new props
api.start((index) => ({ opacity: 0 }))
// Stop all springs
api.stop()
Finally: distribute animated props among the view
The return value is an array containing animated props.
return springs.map((styles) => <animated.div style={styles} />)
Properties
All properties documented in the common props apply.