44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
import React, {useState, useEffect} from 'react';
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import {Button} from 'reactstrap';
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import {FontAwesomeIcon} from '@fortawesome/react-fontawesome';
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import {faArrowUp} from '@fortawesome/free-solid-svg-icons';
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export function ScrollToTopButton() {
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const [isVisible, setIsVisible] = useState(false);
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useEffect(() => {
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const handleScroll = () => {
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if (window.scrollY > 1.5 * window.innerHeight) {
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setIsVisible(true);
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} else {
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setIsVisible(false);
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}
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};
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window.addEventListener('scroll', handleScroll);
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return () => window.removeEventListener('scroll', handleScroll);
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}, []);
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const scrollToTop = () => {
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window.scrollTo({top: 0, behavior: 'smooth'});
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};
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return (
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<Button
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onClick={scrollToTop}
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style={{
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position: 'fixed',
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bottom: '20px',
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right: '20px',
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borderRadius: '50%',
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width: '50px',
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height: '50px',
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zIndex: 999,
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transition: 'opacity 0.5s ease-in-out',
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opacity: isVisible ? 0.7 : 0,
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pointerEvents: isVisible ? 'auto' : 'none'
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}}
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>
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<FontAwesomeIcon icon={faArrowUp} />
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</Button>
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);
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} |