32 lines
615 B
JavaScript
32 lines
615 B
JavaScript
// useIntersectionObserver.js
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import { useEffect, useState, useRef } from "react";
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export function useIntersectionObserver() {
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const [isIntersecting, setIsIntersecting] = useState(false);
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const ref = useRef(null);
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useEffect(() => {
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const observer = new IntersectionObserver(
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([entry]) => {
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setIsIntersecting(entry.isIntersecting);
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},
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{
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root: null,
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rootMargin: "0px",
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threshold: 0.1,
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}
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);
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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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if (ref.current) {
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observer.unobserve(ref.current);
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}
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};
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}, []);
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return [ref, isIntersecting];
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}
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