<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
ul {
list-style: none;
}
body {
background: #000;
}
.wrap {
margin: 100px auto 0;
width: 630px;
height: 394px;
padding: 10px 0 0 10px;
background: #000;
overflow: hidden;
border: 1px solid #fff;
}
.wrap li {
float: left;
margin: 0 10px 10px 0;
}
.wrap img {
display: block;
border: 0;
}
</style>
</head>
<body>
<div class="wrap">
<ul>
<li><a href="#"><img src="img/01.jpg" alt=""/></a></li>
<li><a href="#"><img src="img/02.jpg" alt=""/></a></li>
<li><a href="#"><img src="img/03.jpg" alt=""/></a></li>
<li><a href="#"><img src="img/04.jpg" alt=""/></a></li>
<li><a href="#"><img src="img/05.jpg" alt=""/></a></li>
<li><a href="#"><img src="img/06.jpg" alt=""/></a></li>
</ul>
</div>
</body>
</html>
<script src="./jquery-1.12.4.js"></script>
<script>
$(document).ready(function(){
$('.wrap>ul>li').mouseenter(function(){
$(this).css('opacity',1).siblings('li').css('opacity',0.4)
})
$('.wrap').mouseleave(function(){
$(this).find('li').css('opacity',1)
})
})
</script>