Detailed explanation of steps to use swiper in react
This time I will give you a detailed explanation of the steps for using swiper in react. What are the precautions for using swiper in react? Here are the actual cases, let’s take a look.
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Recent react projects need to use carousel images, so naturally I thought of swiper, and I have always wanted to install it through npm I used it, but I found a lot on the Internet and there was very little information, so I temporarily loaded it by directly referencing swiper's js and css files in index.html. Let's talk about the specific steps and usage. First of all, I am using the swiper3x series here. Next, let’s talk about the specific steps: Introduce js and css files into index.html<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <meta name="theme-color" content="#000000"> <link rel="manifest" href="%PUBLIC_URL%/manifest.json" rel="external nofollow" > <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico" rel="external nofollow" > <link rel="stylesheet" type="text/css" href='%PUBLIC_URL%/static/css/swiper.min.css'> <title>React App</title> </head> <body> <p id="root"></p> <script src='%PUBLIC_URL%/static/js/swiper.min.js'></script> </body> </html>
import React,{Component} from 'react'
let Swiper = window.Swiper
class About extends Component{
constructor(props){
super(props);
this.state = {
myName : "这里是about页面",
}
}
componentWillUnmount() {
if (this.swiper) { // 销毁swiper
this.swiper.destroy()
}
}
componentDidUpdate(){
if(this.swiper){
this.swiper.slideTo(0, 0)
this.swiper.destroy()
this.swiper = null;
}
this.swiper = new Swiper(this.refs.lun, {
loop:true,
pagination: {
el: '.swiper-pagination',
clickable: true,
},
});
}
render(){
return (
<p>
<p className="swiper-container" ref="lun">
<p className="swiper-wrapper">
<p className="swiper-slide" data-id="0">Slide 1</p>
<p className="swiper-slide" data-id="1">Slide 2</p>
<p className="swiper-slide" data-id="2">Slide 3</p>
<p className="swiper-slide" data-id="3">Slide 4</p>
<p className="swiper-slide" data-id="4">Slide 5</p>
<p className="swiper-slide" data-id="5">Slide 6</p>
<p className="swiper-slide" data-id="6">Slide 7</p>
<p className="swiper-slide" data-id="7">Slide 8</p>
<p className="swiper-slide" data-id="8">Slide 9</p>
<p className="swiper-slide" data-id="9">Slide 10</p>
</p>
<p id="PgFather">
<p className="swiper-pagination" id='body-left-pagination'></p>
</p>
</p>
</p>
)
}
}
export default Aboutcallback function. Let's transform the method of building swiper.
this.swiper = new Swiper(this.refs.lun, {
loop:true,
pagination: {
el: '.swiper-pagination',
clickable: true,
onClick: function(swiper,e){
var paginationContainer= document.getElementById('PgFather');
var paginationFather = document.getElementById('body-left-pagination');
//这里是判断是否点击的轮播底部圆点，因为方法在点击圆点的时候也会触发，所以为了能保证点击圆点轮播效果，应该将其屏蔽掉
if(!this.isDOMContains(paginationFather,e.target,paginationContainer)){
var se = document.querySelectorAll(".body-left-lunbo .swiper-slide");
var nowNode = "";
var index = swiper.activeIndex;
if(index==0){
index = se.length-3;
}else if(index==se.length-1){
index=0;
}else{
index = swiper.activeIndex-1;
}
if(self.state.swiperList.length===1){
nowNode = se[0];
}else{
for(var i=0;i<se.length;i++){
if(se[i].getAttribute('data-swiper-slide-index')==index){
nowNode = se[i]
}
}
}
if(nowNode){
var id= nowNode.getAttribute("data-id");
var itemObj = {
id:id
}
goDetail(itemObj,self.state.myName)
return true
}
}else{
return false
}
}
},
});isDOMContains:function(parentEle,ele,container){
console.log(parentEle)
//判断一个节点是否是其子节点
//parentEle: 要判断节点的父级节点
//ele:要判断的子节点
//container : 二者的父级节点
//如果parentEle h和ele传的值一样，那么两个节点相同
if(parentEle == ele){
return true
}
if(!ele || !ele.nodeType || ele.nodeType != 1){
return false;
}
//如果浏览器支持contains
if(parentEle.contains){
return parentEle.contains(ele)
}
//火狐支持
if(parentEle.compareDocumentPosition){
return !!(parentEle.compareDocumentPosition(ele)&16);
}
//获取ele的父节点
var parEle = ele.parentNode;
while(parEle && parEle != container){
if(parEle == parentEle){
return true;
}
parEle = parEle.parentNode;
}
return false;
}php generates a string of random numbers, letters or mixed numbers and letters
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