21 lines
477 B
TypeScript
21 lines
477 B
TypeScript
import React from 'react';
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export const useOnScreen = (ref: React.MutableRefObject<HTMLElement>) => {
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const [isIntersecting, setIntersecting] = React.useState(false);
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const observer = new IntersectionObserver(
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([entry]) => setIntersecting(entry.isIntersecting),
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);
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React.useEffect(() => {
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if (ref.current) {
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observer.observe(ref.current);
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}
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return () => {
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observer.disconnect();
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};
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}, [ref.current]);
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return isIntersecting;
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};
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