今天小编给大家分享一下ReactHooks+ts怎么实现原生轮播的相关知识点,内容详细,逻辑清晰,相信大部分人都还太了解这方面的知识,所以分享这篇文章给大家参考一下,希望大家阅读完这篇文章后有所收获,下面我们一起来了解一下吧。
npm install smoothscroll-polyfill --save
npm i --save-dev @types/smoothscroll-polyfill
import React, { useRef, useState, useEffect } from 'react' import './index.less' import smoothscroll from 'smoothscroll-polyfill' interface List { id: string, text: string } export default () => { const [ButtonList] = useState<List[]>( [ { id: 'n1', text: '推荐' }, { id: 'n2', text: '女装' }, { id: 'n3', text: '运动' }, { id: 'n4', text: '美妆' }, { id: 'n5', text: '男装' }, { id: 'n6', text: '鞋靴' }, { id: 'n7', text: '数码' }, { id: 'n8', text: '母婴' }, { id: 'n9', text: '家电' }, { id: 'n10', text: '国际' }, ] ); const [ContentList] = useState<List[]>( [ { id: 'c1', text: '推荐' }, { id: 'c2', text: '女装' }, { id: 'c3', text: '运动' }, { id: 'c4', text: '美妆' }, { id: 'c5', text: '男装' }, { id: 'c6', text: '鞋靴' }, { id: 'c7', text: '数码' }, { id: 'c8', text: '母婴' }, { id: 'c9', text: '家电' }, { id: 'c10', text: '国际' }, ] ); // ref const navLine = useRef<HTMLDivElement>(null) const tabRef = useRef<HTMLDivElement>(null) const navListParent = useRef<HTMLDivElement>(null) const contentScrollWrap = useRef<HTMLDivElement>(null) const GetContentScrollWrap = () => { return contentScrollWrap.current as HTMLDivElement } const GetTabRef = () => { return tabRef.current as HTMLDivElement } const GetNavLine = () => { return navLine.current as HTMLDivElement } const GetNavListPart = () => { return navListParent.current as HTMLDivElement } // 变量 let swiperStartX: number = 0 let swiperMoveX: number = 0 let num: number = 0 let date: number = 0 let startX: number = 0 let flag: boolean = false // 状态 const [Index, setIndex] = useState<number>(0) const [swiperItemWidth, setContentListWidth] = useState<number>(0) const [tabItemWidth, setNavListWidth] = useState<number>(0) const Cut = (key: number) => { setIndex(key); } const FnStart = (e: React.TouchEvent) => { date = Date.now() num = 0 GetContentScrollWrap().style.transition = 'none' swiperStartX = GetContentScrollWrap().offsetLeft - e.changedTouches[0].pageX; startX = e.changedTouches[0].pageX; GetContentScrollWrap().ontouchmove = FnMove; } const FnMove = (e: TouchEvent) => { swiperMoveX = e.changedTouches[0].pageX; if (num === 0) { flag = true } num++ if (GetContentScrollWrap().offsetLeft > 0 || GetContentScrollWrap().offsetLeft < -swiperItemWidth * (ButtonList.length - 1)) return false if (flag) { GetContentScrollWrap().style.left = swiperMoveX + swiperStartX + 'px' GetContentScrollWrap().ontouchend = FnEnd; } } const FnEnd = (e: TouchEvent) => { flag = false; // let num = Index GetContentScrollWrap().style.transition = 'left .3s linear' if (Math.abs(startX - e.changedTouches[0].pageX) > swiperItemWidth / 2 || Date.now() - date < 300) { // if (startX - e.changedTouches[0].pageX < 0) { // if (Index > 0) { // num = Index - 1 // } else { // num = 0 // } // } else if (Index + 1 > ButtonList.length - 1) { // num = ButtonList.length - 1 // } else { // num = Index + 1 // } // setIndex(num) setIndex(startX - e.changedTouches[0].pageX < 0 ? Index > 0 ? Index - 1 : 0 : Index + 1 > ButtonList.length - 1 ? ButtonList.length - 1 : Index + 1) } GetContentScrollWrap().style.left = -Index * swiperItemWidth + 'px' GetContentScrollWrap().ontouchmove = null; GetContentScrollWrap().ontouchend = null; } // 监听Index useEffect(() => { let lineTo = tabItemWidth * Index; GetNavLine().style.transform = `translate3d(${lineTo}px,0,0)`; GetNavLine().style.transition = '.1s'; //控制tab滚动 let tabTo = lineTo - tabItemWidth; GetTabRef().scrollTo({ left: tabTo, behavior: "smooth" }); GetTabRef().style.transition = '.5s'; // 控制swiper滚动 let swiperTo = swiperItemWidth * Index; GetContentScrollWrap().style.left = -swiperTo + 'px'; GetContentScrollWrap().style.transition = '.5s'; }, [Index]); // 解决移动端 scrollTo 的 behavior: "smooth" 无效的问题 useEffect(() => { smoothscroll.polyfill(); // swiper元素宽度 setContentListWidth((GetContentScrollWrap().children[0] as HTMLDivElement).offsetWidth) // nav列表宽度 setNavListWidth((GetNavListPart().children[0] as HTMLDivElement).offsetWidth) }, []) return ( <div className="v-home-wrap"> <div className='nav-wrap' ref={tabRef}> <div className="nav" ref={navListParent}> {ButtonList.map((item, index) => <div key={item.id} onClick={() => Cut(index)} className={Index === index ? "nav-list ac" : "nav-list"}>{item.text}</div> )} <div className="nav-line" ref={navLine}></div> </div> </div> <div className="content-wrap"> <div className="content" onTouchStart={FnStart} ref={contentScrollWrap}> {ContentList.map((item, index) => <div className='content-list' key={item.id}>{item.text}</div> )} </div> </div> </div> ) }
.v-home-wrap { touch-action: none; .nav-wrap { width: 100%; overflow-x: scroll; background: #f74077; .nav { padding: 0 20px; display: flex; align-items: center; justify-content: space-between; // min-width: 132vw; color: #fff; position: relative; height: 82px; .nav-list { // box-sizing: border-box; display: inline-block; font-size: 28px; padding: 0 18px; min-width: 75px; } .nav-list.ac { font-size: 34px; } .nav-line { position: absolute; width: 40px; height: 6px; background-color: #f9e2e8; border-radius: 2px; left: 45px; bottom: 0; // transition: all 1s; } } } .nav-wrap::-webkit-scrollbar { display: none; } .content-wrap { // overflow-x: scroll; overflow: hidden; height: 70vh; position: relative; left: 0; .content { min-width: 1000%; display: flex; height: 80vh; // overflow-x: scroll; position: absolute; .content-list { // white-space:nowrap; // display: inline-block; height: 80vh; // overflow-y: scroll; width: 100vw; font-size: 50px; text-align: center; color: #fff; } .content-list:nth-child(2n) { background: red; } .content-list:nth-child(2n-1) { background: blue; } } } }
以上就是“ReactHooks+ts怎么实现原生轮播”这篇文章的所有内容,感谢各位的阅读!相信大家阅读完这篇文章都有很大的收获,小编每天都会为大家更新不同的知识,如果还想学习更多的知识,请关注亿速云行业资讯频道。
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