<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
}
ul {
list-style-type: none;
}
.box {
width: 400px;
height: 300px;
border: 1px solid #ccc;
margin: 100px auto;
overflow: hidden;
}
.hd {
height: 45px;
}
.hd span {
display: inline-block;
width: 90px;
background-color: pink;
line-height: 45px;
text-align: center;
cursor: pointer;
}
.hd span.current {
background-color: purple;
}
.bd li {
height: 255px;
background-color: purple;
display: none;
}
.bd li.current {
display: block;
}
</style>
</head>
<body>
<div class="box" id="box">
<div class="hd">
<span class="current">体育</span>
<span>娱乐</span>
<span>新闻</span>
<span>综合</span>
</div>
<div class="bd">
<ul>
<li class="current">我是体育模块</li>
<li>我是娱乐模块</li>
<li>我是新闻模块</li>
<li>我是综合模块</li>
</ul>
</div>
</div>
<script src="common.js"></script>
<script>
//获取最外面的div标签
var box = my$("box");
//获取里面的第一个div
var hd = box.getElementsByTagName("div")[0];
//获取里面的第二个div
var db = box.getElementsByTagName("div")[1];
//获取所有的span标签
var spans = hd.getElementsByTagName("span");
//获取所有的li标签
var lis = db.getElementsByTagName("li");
//循环遍历的方式添加点击事件
for (var i = 0; i < spans.length; i++) {
//在点击之前把索引存储到span标签中
spans[i].setAttribute("index", i);
spans[i].onclick = function () {
//点击的时候获取存储的索引值
var index = this.getAttribute("index");
//第一件事,所有的span的类样式全部移除
for (var j = 0; j < spans.length; j++) {
spans[j].removeAttribute("class");
lis[j].removeAttribute("class");
}
//第二件事,当前被点击的span添加类样式
this.className = "current";
lis[index].className = "current";
};
}
</script>
</body>
</html>
原文地址：https://www.cnblogs.com/cuilichao/p/9368909.html
时间： 2024-08-02 00:12:49