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| <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
ul{
list-style: none;
}
.root{
width: 500px;
height: 400px;
border: #FFD700 2px solid ;
margin: 30px auto;
}
.email{
width: 100px;
height: 100%;
float: left;
background-color: pink;
position: relative;
}
.email li{
width: 100%;
height: 100px;
line-height: 100px;
text-align: center;
border-bottom: #FFD700 solid 2px ;
box-sizing: border-box;
}
.email li:last-of-type{
border-bottom: none;
}
.email span{
position: absolute;
right: 0;
top: 25px;
width: 0px;
height: 0px;
display: inline-block;
border:25px solid transparent;
border-right-color: red;
transition: all .3s linear;
}
.right{
float: right;
width: 400px;
height: 100%;
background-color: orange;
font-size: 32px;
text-align: center;
line-height: 400px;
}
</style>
</head>
<body>
<div class="root">
<ul class="email">
<li>QQ邮箱</li>
<li>网易邮箱</li>
<li>新浪邮箱</li>
<li>阿里邮箱</li>
<span id="sanjiao"></span>
</ul>
<div class="right">这是QQ邮箱</div>
</div>
</body>
</html>
<script type="text/javascript">
var liArray = document.getElementsByTagName("li");
var rightDiv = document.getElementsByClassName("right")[0];
var colorArray = ["orange", "purple", "greenyellow", "skyblue"];
for (var i = 0; i < liArray.length; i++) {
liArray[i].index = i;
liArray[i].onmouseenter = function(){
sanjiao.style.top = 25 + 100 * this.index + "px";
rightDiv.innerHTML = "这是" + this.innerHTML;
rightDiv.style.backgroundColor = colorArray[this.index];
}
}
</script>
|
