<!DOCTYPE html>
<html>
<head>
<title>qqq</title>
<meta charset="utf-8">
<style type="text/css">
*{
margin:0;
padding:0;
}
h1{
text-align: center;
margin:20px 0;
}
#imgdiv{
width: 500px;
margin:50px auto;
}
#imgdiv img{
width: 300px;
margin:0 100px;
}
#bigimg{
width: 100%;
height: 100%;
position: fixed;
background: rgba(0,0,0,.3);
top: 0;
display: none;
}
#bigimg img{
width: 1000px;
margin:auto;
position: fixed;
left:0;
right:0;
top: 80px;
cursor: pointer;
}
</style>
</head>
<body>
<h1>图片预览 - 放大/缩小</h1>
<!-- 图片容器 -->
<div id="imgdiv" onclick="imgbig();">
<img src="zsdfsaerg.jpg" id="imgsrc" />
</div>
<!-- 放大遮罩层 -->
<div id="bigimg" onclick="closeimg();"></div>
</body>
<!-- JS -->
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.1.1/jquery.js"></script>
<script>
function imgbig() {
var imgsrc = $('#imgsrc').attr('src');
$("#bigimg").css("display","block");
$("#bigimg").html("<img src="+imgsrc+" />");
}
function closeimg() {
$("#bigimg").css("display","none");
}
</script>
</html>
