最近遇到一个需求，一个页面有几个swiper，要求点击每个swiper里的图，被点击的图会放大呈现预览效果。如图：
代码放上：
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no minimal-ui">
<meta charset="UTF-8">
<title>Document</title>
<link href=" https://cdn.bootcss.com/Swiper/3.4.2/css/swiper.min.css" rel="stylesheet">
<!-- <link rel="stylesheet" href="css/swiper.min.css"> -->
<style>
.showBigImg {
display: none;
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 100%;
background: rgba(0,0,0,.6);
z-index: 999;
}
.showBigImg .closeBigImg {
position: absolute;
right: 35px;
top: 35px;
width: 50px;
height: 50px;
border-radius: 50%;
background: #000;
text-align: center;
line-height: 45px;
font-size: 45px;
color: #fff;
z-index: 9999;
user-select: none;
}
.showBigImg .showBigImgWrap {
position: relative;
width: 30%;
height: 100%;
overflow: hidden;
}
.showBigImg .showBigImgWrap .allImgBox {
position: relative;
width: 100%;
height: 100%;
}
.showBigImg .showBigImgWrap .allImgBox .imgIte {
float: left;
width: 100%;
height: 100%;
text-align: center;
}
.showBigImg .showBigImgWrap .allImgBox .imgIte span {
display: inline-block;
width: 0;
height: 100%;
vertical-align: middle;
}
.showBigImg .showBigImgWrap .allImgBox .imgIte img {
max-width: 90%;
max-height: 90%;
vertical-align: middle;
}
.small-img img{
width: 150px;
}
.swiper-slide {
text-align: center;
font-size: 18px;
display: -webkit-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-webkit-box-pack: center;
-ms-flex-pack: center;
-webkit-justify-content: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
-webkit-align-items: center;
align-items: center;
}
.swiper-slide img {
width: 100%;
}
.showBigImgWrap img {
width: auto;
}
</style