Biegral Blog

HTML

<div id="box">
        <ul class="clearfix">
            <li class="current">北京邮电</li>
            <li>南京邮电</li>
            <li>重庆邮电</li>
            <li>西安邮电</li>
        </ul>
        <span class="show">北京邮电大学</span>
        <span>南京邮电大学</span>
        <span>重庆邮电大学</span>
        <span>西安邮电大学</span>
    </div>

CSS

*{
            margin: 0;
            padding: 0;
        }
        .clearfix:before,
        .clearfix:after{
            content: "";
            display: block;
        }
        .clearfix:after{
            clear: both;
        }
        #box{
            width: 400px;
            height: 300px;
            margin: 100px auto;
            overflow:  hidden;
            border: 1px solid #369;
        }
        ul li{
            width: 100px;
            float: left;
            text-align: center;
            cursor: pointer;
            list-style: none;
            height: 40px;
            line-height: 40px;
            background: #ccc;
        }
        span{
            display: none;
            height: 260px;
            background: #369;
            text-align: center;
            font-size: 30px;
            font-weight: bold;
            line-height: 260px;
        }
        .current{
            background: #369;
            border-bottom: 3px solid red;
        }
        .show{
            display: block;
        }

js代码

window.onload = function(){
        var oLi = document.getElementsByTagName("li");
        var oSpan = document.getElementsByTagName("span");

        for( var i=0; i<oLi.length; i++ ){
            oLi[i].index = i;
            oLi[i].onclick = function(){
                for( var j=0; j<oLi.length; j++ ){
                    oLi[j].className ="";
                    oSpan[j].style.display ="none";
                }
                this.className = "current";
                // oSpan[this.index].className ="show";
                oSpan[this.index].style.display = "block";
            }
        }
        }