实例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Tabs</title>
<style>
*{
margin: 0px;
padding: 0px;
border-collapse: collapse;
}
li{
/* 清除li的点 */
list-style:none;
/* 左浮动,横向排列 */
float: left;
width: 50px;
height: 30px;
/* 水平对齐 */
text-align: center;
/* 居中对齐 和 height同高 */
line-height: 30px;
border: 1px solid #ccc;
background :#cca;
/* 鼠标小手 */
cursor: pointer;
}
/* 清除浮动 */
.clearFix{
clear:both;
}
/* 设置内容Tab */
.contents{
width: 153px;
height : 150px;
border: 1px solid #ccc;
background: #cca;
}
.outcontents{
width: 153px;
height: 150px;
/* 溢出隐藏,为了只显示第一张 */
overflow: hidden;
}
</style>
</head>
<body>
<div id='tabs'>
<ul>
<li><a onmouseover="fun_tab(0)">TabA</a></li>
<li><a onmouseover="fun_tab(1)">TabB</a></li>
<li><a onmouseover="fun_tab(2)">TabC</a></li>
</ul>
<div class="clearFix"></div>
<div class="outcontents">
<div class='contents'>TAB-A-Contents</div>
<div class='contents'>TAB-B-Contents</div>
<div class='contents'>TAB-C-Contents</div>
<div class='contents'>TAB-D-Contents</div>
</div>
</div>
<script>
function fun_tab(num){
// 获取所有tab内容的dom
var contents = document.getElementsByClassName('contents');
// 设置内容dom的CSS: display:none ,隐藏
for (let i = 0; i < contents.length; i++) {
contents[i].style.display ="none";
}
// 点那个就显示哪个
contents[num].style.display ='block';
}
</script>
</body>
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