<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<style type="text/css">
body {
margin: 0;
padding: 0;
}
ul li {
list-style: none;
float: left;
padding-left: 30px;
padding-bottom: 30px;
}
</style>
<ul class="ull">
<li><img src="1.jpg" ></li>
<li><img src="1.jpg" ></li>
<li><img src="1.jpg" ></li>
<li><img src="1.jpg" ></li>
<li><img src="1.jpg" ></li>
<li><img src="1.jpg" ></li>
</ul>
<script>
$(function(){
$(".ull").find("img").each(function(){
var imagew = 80;
var imageh = 60;
var imag = new Image();
var sfbl = 0;
imag.src=this.src;
// 判断图片是否存在
if(imag.width > 0 && imag.height >0){
sfbl = (imagew/imag.width < imageh / imag.height ) ? imagew/imag.width : imageh / imag.height;
if(sfbl <= 1){
this.style.width = imag.width*sfbl;
this.style.height = imag.height*sfbl;
}else{
this.style.width = imag.width;
this.style.height = imag.height;
}
}
})
})
</script>
</body>
</html>