效果如上图：
原理：
1、利用css 的 transform 和一些其他的属性，先选五张将图片位置拍列好，剩余的隐藏
2、利用 js 动态切换类名，达到切换效果
css代码如下
.swiper-certify{
/*上下左右居中*/
height: 100%;
100%;
.centerPosition {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-o-transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
-moz-transform: translate(-50%, -50%);
-webkit-transform: translate(-50%, -50%);
}
/*上下居中*/
.YcenterPosition {
position: absolute;
top: 50%;
transform: translateY(-50%);
-o-transform: translateY(-50%);
-ms-transform: translateY(-50%);
-moz-transform: translateY(-50%);
-webkit-transform: translateY(-50%);
}
/*左右居中*/
.XcenterPosition {
position: absolute;
left: 50%;
transform: translateX(-50%);
-o-transform: translateX(-50%);
-ms-transform: translateX(-50%);
-moz-transform: translateX(-50%);
-webkit-transform: translateX(-50%);
}
ul.swiper-certif-list {
100%;
height: 100%;
margin: auto;
position: relative;
li {
50%;
position: absolute;
transition: all 0.5s ease-out;
border-radius: 5px;
box-shadow: 0 10px 20px -10px #333;
cursor: pointer;
img {
100%;
display: block;
}
}
}
.p0, .p1 {
opacity: 0;
transform: translate3d(0, -50%, 0) scale(0.7);
transform-origin: 0 50%;
z-index: 0;
}
.p2 {
opacity: 0.3;
transform: translate3d(0, -50%, 0) scale(0.7);
transform-origin: 0 50%;
z-index: 1;
}
.p3 {
transform: translate3d(15%, -50%, 0) scale(0.8);
transform-origin: 0 50%;
opacity: 0.6;
z-index: 2;
}
.p4 {
transform: translate3d(50%, -50%, 0) scale(1);
transform-origin: 0 50%;
z-index: 3;
opacity: 1;
}
.p5 {
transform: translate3d(85%, -50%, 0) scale(0.8);
transform-origin: 100% 50%;
opacity: 0.7;
z-index: 2;
}
.p6 {
opacity: 0.3;
transform: translate3d(100%, -50%, 0) scale(0.7);
transform-origin: 100% 50%;
z-index: 1;
}
.p7, .p8, .p9 {
opacity: 0;
transform: translate3d(100%, -50%, 0) scale(0.7);
transform-origin: 100% 50%;
z-index: 0;
}
}
vue 组件代码
<template>
<div class="swiper-certify">
<ul class="swiper-certif-list"
@mouseenter="onMouseEnter"
@mouseleave="onMouseLeave"
>
<li
v-for="(item,index) in swiperOption.imgs"
:key="index"
:class="classRender[index] || leftHide"
@click="slideClick(classRender[index])"
class="YcenterPosition"
>
<img :src="item">
</li>
</ul>
</div>
</template>
<script>
import { clearInterval } from 'timers';
export default {
props:{
swiperOption:{
type:Object,
default:function(){
return {
imgs:[], //图片地址
speed:3000, //轮播时间
startIndex:0 //开始图片
}
}
}
},
data(){
var me = this;
var imgs = me.swiperOption.imgs || [];
var max = imgs.length;
var speed = me.swiperOption.speed || 3000;
var startIndex = me.swiperOption.startIndex || 0;
var hideNum = Math.floor((max - 5)/2);
return {
max:max,
speed:speed,
index:startIndex,
classCenter:"p4",
classLeft:['p2', 'p3'],
classRight:['p5', 'p6'],
leftHide:'p0',
rightHide:'p7',
hideNum:hideNum,
classRender:[],
timerT:null
}
},
watch:{
'swiperOption.imgs':{
handler:function(val){
this.max = val.length;
this.hideNum = Math.floor((val.length - 5)/2);
},
deep:true
}
},
created(){
},
mounted(){
this.init();
},
methods:{
init(){
var me = this;
if(me.max <= 5){
me.refresh();
}else if(me.max > 5){
me.initLunbo();
}
},
initLunbo(){
var me = this;
me.refresh();
me.createTimer();
},
createTimer(){
var me = this;
window.clearInterval(me.timerT);
me.timerT = setInterval(function () {
//console.log(me.index)
me.change(1);
}, me.speed);
},
change(dir){
var me = this;
var index = me.index;
index = index + dir;
if(index < 0){
index = me.max - 1;
}
if(index >= me.max){
index = 0;
}
me.index = index;
//当前展示第 index 个
me.refresh();
me.$emit("change",me.index);
},
refresh(){
var me = this;
var index = me.index;
if(index < 0 || index >= me.max){
return ;
}
//因为只展示五个
var arr = new Array(me.max);
var left = index -1;
var right = index + 1;
arr[index] = me.classCenter;
var count = me.hideNum + 1; //左右都需要减两次
var classLeft = me.classLeft.slice(0);
while(count >= 0){
if(left < 0){
left = me.max-1;
}
if(classLeft.length >= 0){
arr[left] = classLeft.pop();
}else{
arr[left] = me.leftHide;
}
left--;
count--;
}
count = me.hideNum + 1;
var classRight = me.classRight.slice(0);
while(count >= 0){
if(right >= me.max){
right = 0;
}
if(classRight.length){
arr[right] = classRight.shift();
}else{
arr[right] = me.rightHide;
}
right++;
count--;
}
for(var i = 0; i < arr.length; i++){
if(!arr[i]){
arr[i] = me.rightHide;
}
}
me.classRender = arr;
},
changeTo(index){
var me = this;
if(index < 0){
index = me.max - 1;
}
if(index >= me.max){
index = 0;
}
me.index = index;
me.refresh();
me.$emit("change",me.index);
},
slideClick(cls){
var self = this;
if(cls == self.classLeft[0] || cls == self.classLeft[1]){
//左
self.change(1)
}
if(cls == self.classRight[0] || cls == self.classRight[1]){
//右
self.change(-1)
}
},
onMouseEnter(e){
window.clearInterval(this.timerT);
},
onMouseLeave(){
this.createTimer(self);
}
}
}
</script>
<style lang="scss" scoped src="./swiper-certify.scss"></style>
使用方式：
直接引入：
