28 lines
653 B
JavaScript
28 lines
653 B
JavaScript
import { useState, useEffect, useRef } from 'react';
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export default function useSticky(defaultSticky = false) {
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const [isSticky, setIsSticky] = useState(defaultSticky);
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const ref = useRef(null);
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const initialTop = useRef(0);
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useEffect(() => {
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const handleScroll = () => {
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if (window.pageYOffset > initialTop.current) {
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setIsSticky(true);
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} else {
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setIsSticky(false);
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}
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};
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initialTop.current = ref.current.offsetTop;
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window.addEventListener('scroll', handleScroll);
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return () => {
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window.removeEventListener('scroll', handleScroll);
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};
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}, []);
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return { ref, isSticky };
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}
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