<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta charset="gb2312"> <link rel="stylesheet" href="main.css"> <script type="text/javascript" src="main.js"></script> <title>Document</title> </head> <body> <div class="top"> <ul class="clear" id="btn_one"> <li class="light" data-color="red">one</li> <li data-color="blue">two</li> <li data-color="yellow">three</li> </ul> </div> <div class="main" id="amain"> <div class="min main1"> <ul> <li>这里有座山</li> <li>这里有座山</li> <li>这里有座山</li> <li>这里有座山</li> <li>这里有座山</li> </ul> </div> <div class="min main2" style="display: none"> <ul> <li>窗外有风景</li> <li>窗外有风景</li> <li>窗外有风景</li> <li>窗外有风景</li> <li>窗外有风景</li> </ul> </div> <div class="min main3" style="display: none"> <ul> <li>天上有太阳</li> <li>天上有太阳</li> <li>天上有太阳</li> <li>天上有太阳</li> <li>天上有太阳</li> </ul> </div> </div> </body> </html>
上面是html代码,很简单就是一个选项卡内容
* { margin: 0; padding: 0; font-size: 14px; } /*这里关键了,在float下一样可以获取width和height的值*/ .clear { zoom: 1; } .clear:after { content: ‘‘; display: block; clear: both; } .top ul { list-style-type: none; } .top ul li { width: 200px; height: 50px; line-height: 50px; text-align: center; float: left; background-color: powderblue; color: pink; border: 2px solid powderblue; } .top ul li.light { border: 2px solid red; color: red; } .main { width: 612px; height: 300px; position: relative; background: red; } .min { width: 612px; height: 300px; position: absolute; left: 0; top: 0; } .min ul li { height: 30px; line-height: 30px; font-size: 20px; }
上面是CSS样式,很简单;用light样式来高亮li初始
// 通过ID 封装函数,如果id字符串等于string,返回getElementById(id) // 否则返回id 本身; function $(id) { return typeof id == "string" ? document.getElementById(id) : id; } window.onload = function() { //获取鼠标滑动onmouseover或者点击onclick的标签li和要切换的元素; //定义函数titles(li的集合)divs(div的集合); var titles = $("btn_one").getElementsByTagName("li"); var divs = $("amain").getElementsByTagName("div"); //当titles和divs的长度不一样就不执行; if (titles.length != divs.length) { return; } for (var i = 0; i < titles.length; i++) { //为btn_on下的每个li添加索引; titles[i].id = i; titles[i].onmouseover = function() { //getAttribute可以取得自定义标签data-color的值; var btnstyle = this.getAttribute("data-color"); //清楚所有li和div上的样式 clearBtn(); //鼠标滑过哪个li就高亮哪个li; this.className = "light"; //data-color当下的值给当前次数的li的内容 this.style.color = btnstyle; //把data-color当下的值给当前次数li的边框 this.style.border = ‘2px solid ‘ + btnstyle; //设置当前li所对应的div为显示状态 divs[this.id].style.display = "block"; } } function clearBtn() { for (var i = 0; i < titles.length; i++) { //li的样式为空 titles[i].className = ""; //li的内容为白色 titles[i].style.color = ""; //li的边框为空 titles[i].style.border = ""; //div为隐藏状态 divs[i].style.display = "none"; } } }
就是通过索引来连接上下两个div,直接可以通过titles和divs两个函数进行响应
时间: 2024-10-14 16:12:57