41 lines
823 B
TypeScript
41 lines
823 B
TypeScript
'use client'
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import { useEffect, useState } from 'react'
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export function ScrollToTop() {
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const [isVisible, setIsVisible] = useState(false)
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// 检查滚动位置
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const toggleVisibility = () => {
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if (window.pageYOffset > 300) {
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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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// 滚动到顶部
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const scrollToTop = () => {
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window.scrollTo({
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top: 0,
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behavior: 'smooth'
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})
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}
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useEffect(() => {
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window.addEventListener('scroll', toggleVisibility)
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return () => {
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window.removeEventListener('scroll', toggleVisibility)
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}
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}, [])
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return (
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<button
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className={`scroll-to-top ${isVisible ? 'show' : ''}`}
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onClick={scrollToTop}
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aria-label="Scroll to top"
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>
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<i className="fas fa-arrow-up"></i>
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</button>
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)
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}
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