html部分代码：
<!doctype html>
<html lang="ch-ZN">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>jQuery简单实现鼠标经过切换图片特效</title>
<link rel="stylesheet" href="tb.css">
<script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<main class="main">
<div class="content pure-g">
<ul class="pure-u-1-4">
<li><a href="#">高清桂林山水壁纸图片</a></li>
<li><a href="#">高清阿尔卑斯山壁纸图片</a></li>
<li><a href="#">青山绿水高清壁纸风景图片</a></li>
<li><a href="#">好看的海岛唯美风景图片</a></li>
<li><a href="#">桃花盛开的粉色美景高清壁纸桃花盛开的粉色美景高清壁纸</a></li>
<li><a href="#">一片草青色的大草原高清壁纸</a></li>
<li><a href="#">坝上草原高清唯美日落夜景</a></li>
<li><a href="#">海浪美景高清壁纸欣赏</a></li>
<li><a href="#">海上的蓝天白云高清壁纸</a></li>
<li><a href="#">绿油油的竹海美景高清壁纸</a></li>
</ul>
<div class="right pure-u-3-4">
<div>
<a href="#"><img src="images/1.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/2.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/3.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/4.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/5.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/6.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/7.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/8.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/9.jpg" alt=""></a>
</div>
<div>
<a href="#"><img src="images/10.jpg" alt=""></a>
</div>
</div>
</div>
</main>
<script>
//鼠标经过切换图片特效
$(function () {
$("ul li").mouseover(function () {//鼠标经过左侧li时
var index = $(this).index();//给当前li声明一个index变量
$(".right div").eq(index).show();//鼠标经过当前li的时候对应显示右侧对应索引的图片
$(".right div").eq(index).siblings().hide();//隐藏其他li对应的图片
})
})
</script>
</body>
</html>在页面头部引用了百度的jQuery库，并引用了pure前端框架，并在css代码中进行了引用。Css代码：
@import url(pure.css);
*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
body{
font-family: "Microsoft YaHei UI Light";
font-size: 16px;
color: #666;
}
ul li{
list-style: none;
}
a{
color: #df5000;
text-decoration: none;
}
.main{
margin-top: 20px;
}
.content{
width: 1024px;
height: 360px;
margin: 0 auto;
padding: 15px;
background-color:#dddddd;
overflow: hidden;
border-radius: 5px;
}
.content ul li{
max-width: 100%;
margin-right: 5px;
padding: 5px;
line-height: 24px;
counter-increment:number;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
transition: all 0.6s;
}
.content ul li::before{
display: inline-block;
width: 20px;
height: 20px;
content: counter(number);
margin-right: 5px;
}
.content ul li:nth-child(1)::before{
color: rgba(255,0,0,.9);
}
.content ul li:nth-child(2)::before{
color: rgba(255,0,0,.6);
}
.content ul li:nth-child(3)::before{
color: rgba(255,0,0,.4);
}
.content ul li:hover{
background-color: #fff;
border-bottom: 1px dashed #000;
border-radius: 5px;
}
.content .right{
height: 334px;
overflow: hidden;
}
.content .right img{
display: block;
width: 100%;
height: 334px;
}
需要将pure.css放在和html同一目录下。以下是效果图：
