摘要：
：QueryType；开关导航？：（navInfo:NavImgType）=˃无效；}函数NavSwiper（props:IProps）：JSX。元素｛const[swiper，setSwiper]=useState（null）；const[activeIndex，setActiveIndex]=useState（0）；const[hasInit，setHasInit]=useState（false）；const｛by，option｝=props？。查询||{}；letnavImgs:NavImgType[]=[]；switch（by）｛caseNavType.categy:navImgs=navStyleImgs.contat（navCategoryImgs）；break；caseNavType.style:默认值：navImgs=navCategory IMgs.concat（navStylIMgs），break；｝//上一个屏幕函数slideToNext（）｛wiper？.slideNext（）；｝//下一屏幕函数slideToRev（）｛wiper？.slidePrev（）；｝//单击类别函数switchNav（navInfo:NavImgType）｛props？.onSwitchNav&&props.onSwitchNav（navInfo）；｝return（＜SwiperclassName＝｛styles.navSwiper｝loopbloopedSlides＝｛5｝slidesPerView＝｛3｝slides PerGroup＝｛4｝spaceBetween＝｛16｝onSlideChange＝｛（swiper）＝＞setActiveIndex（swiper？.activeIndex）｝onSwiper＝{（swipper）＝＞set swiper（swiper）｝onInit＝｛）＝＝＞setHasInit（true）｝＞｛！hasInit？（＜LazyImageclassName＝{styles.nawLoading｝/＞）：（＜React.Frage＞｛navImgs.map（（img，key）=˃｛return（˂imgsrc={img？
目录
需求
- 实现React可切换轮播图
- 效果预览
使用库
- swiper官网 https://swiperjs.com/react
- npm i swiper@6.5.0 --save
实现方法
/** 导航 */
import React, { useState } from "react";
import SwiperCore, { Navigation, Pagination, Autoplay, Thumbs } from "swiper";
import { Swiper, SwiperSlide } from "swiper/react";
import Icon from "./component/icon";
import LazyImage from "./component/lazyImage";
import { navCategoryImgs, navStyleImgs } from "./imgs";
import {
NavType,
NavImgType,
QueryType,
} from "./types";
import styles from "./index.less";
import "swiper/swiper-bundle.css";
SwiperCore.use([Navigation, Pagination, Autoplay, Thumbs]);
interface IProps {
query?: QueryType;
onSwitchNav?: (navInfo: NavImgType) => void;
}
function NavSwiper(props: IProps): JSX.Element {
const [swiper, setSwiper] = useState<SwiperCore | null>(null);
const [activeIndex, setActiveIndex] = useState<number>(0);
const [hasInit, setHasInit] = useState<boolean>(false);
const { by, option } = props?.query || {};
let navImgs: NavImgType[] = [];
switch (by) {
case NavType.category:
navImgs = navStyleImgs.concat(navCategoryImgs);
break;
case NavType.style:
default:
navImgs = navCategoryImgs.concat(navStyleImgs);
break;
}
// 上一屏
function slideToNext() {
swiper?.slideNext();
}
// 下一屏
function slideToPrev() {
swiper?.slidePrev();
}
// 点击类目
function switchNav(navInfo: NavImgType) {
props?.onSwitchNav && props.onSwitchNav(navInfo);
}
return (
<Swiper
className={styles.navSwiper}
loop
loopedSlides={5}
slidesPerView={5}
slidesPerGroup={5}
spaceBetween={16}
onSlideChange={(swiper) => setActiveIndex(swiper?.activeIndex)}
onSwiper={(swiper) => setSwiper(swiper)}
onInit={() => setHasInit(true)}
>
{!hasInit ? (
<LazyImage className={styles.navLoading} />
) : (
<React.Fragment>
{navImgs.map((img, key) => {
return (
<SwiperSlide key={key} className={styles.navSlide}>
<img
src={img?.src}
onClick={() => {
switchNav(img);
}}
/>
</SwiperSlide>
);
})}
</React.Fragment>
)}
{hasInit && (
<React.Fragment>
<span
slot="container-start"
className={styles.navPrev}
onClick={slideToPrev}
>
<Icon name="ArrowLeft" />
</span>
<span
slot="container-end"
className={styles.navNext}
onClick={slideToNext}
>
<Icon name="ArrowRight" />
</span>
</React.Fragment>
)}
</Swiper>
);
}
export default NavSwiper;
.navSwiper {
user-select: none;
.navLoading {
100%;
height: 160px;
}
.navSlide {
227px;
height: 160px;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
&:hover {
opacity: 0.9;
}
}
.navPrev,
.navNext {
position: absolute;
top: 56px;
24px;
height: 48px;
text-align: center;
font-size: 24px;
line-height: 46px;
color: #aaaaaa;
background: rgba(0, 0, 0, 0.2);
z-index: 2;
cursor: pointer;
&:hover {
opacity: 0.9;
}
}
.navPrev {
left: 0;
}
.navNext {
right: 0;
}
}