21 lines
528 B
TypeScript
21 lines
528 B
TypeScript
import { useCallback, useEffect, useState } from 'react';
|
|
|
|
export default function useScroll(threshold: number) {
|
|
const [scrolled, setScrolled] = useState(false);
|
|
|
|
const onScroll = useCallback(() => {
|
|
setScrolled(window.scrollY > threshold);
|
|
}, [threshold]);
|
|
|
|
useEffect(() => {
|
|
window.addEventListener('scroll', onScroll);
|
|
return () => window.removeEventListener('scroll', onScroll);
|
|
}, [onScroll]);
|
|
|
|
// also check on first load
|
|
useEffect(() => {
|
|
onScroll();
|
|
}, [onScroll]);
|
|
|
|
return scrolled;
|
|
} |