A state container which limits the frequency with which setState can be called using `requestAnimationFrame`.
npm install @render-props/throttlerequestAnimationFrame.This is a perfect component for capturing the state from events like scroll, keypress
and size.
yarn add @render-props/throttle` or `npm i @render-props/throttle`
____
Usage
`js
import Throttle from '@render-props/throttle'
function ThrottledBodyScroller () {
return (
{({throttleState, state}) => (
onScroll={
e => throttleState(
prevState => (
window.scrollY > 30
? {gt30: true, scrollY: window.scrollY}
: {gt30: false, scrollY: window.scrollY}
)
)
}
>
Greater than 30? {String(state.gt30)}
)}
)
}
`____
Props
- initialState {object}: the state which this component should initialize with. This component is NOT controlled so you cannot update the state of this component by changing the property value here.Render Props
#### Methods
-
throttleState: this function is setState wrapped in a throttle function which uses requestAnimationFrame to limit the number of calls to setState. This is useful for reducing the burden of rapidly-fired events like scrolling.#### State
-
state {object}: in addition to the throttleState method, this component provides the state exactly as its been set using throttleState`