DEMO-MENU_Ul_Li【html/css/javascript综合运用】

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Document</title>

    <style type="text/css">

    *{margin:0;

     padding:0;

     font-size:13px;

     list-style:none;}

 

.menu{width:210px;

      margin:50px auto;

      border:1px solid #ccc;}

 

.menu p{height:25px;

        line-height:25px;

        font-weight:bold;

        background:#eee;

        border-bottom:1px solid #ccc;

        cursor:pointer;

        padding-left:5px;}

 

.menu div ul{display:none;}

 

.menu li{height:24px;

         line-height:24px;

         padding-left:5px;}

</style>

    <script type="text/javascript">

    window.onload=function(){

 

      // 将所有点击的标题和要显示隐藏的列表取出来

    var ps = document.getElementsByTagName("p");

    var uls = document.getElementsByTagName("ul");

 

     // 遍历所有要点击的标题且给它们添加索引及绑定事件

    for(var i = 0, n = ps.length; i <n; i += 1){

 

        ps[i].id = i;

        ps[i].onclick = function(){

            for(var j = 0; j < n ; j += 1){

               uls[j].style.display = "none";

            }

            uls[this.id].style.display = "block";

        }

     // 获取点击的标题上的索引属性,根据该索引找到对应的列表

    }

     // 判断该列表,如果是显示的则将其隐藏,如果是隐藏的则将其显示出来

 }

    </script>

</head>

<body>

    <div class="menu" id="menu">

        <div>

            <p>Web前端</p>

            <ul style="display:block">

                <li>JavaScript</li>

                <li>DIV+CSS</li>

                <li>jQuery</li>

            </ul>

        </div>

        <div>

            <p>后台脚本</p>

            <ul>

                <li>PHP</li>

                <li>ASP.net</li>

                <li>JSP</li>

            </ul>

        </div>

        <div>

            <p>前端框架</p>

            <ul>

                <li>Extjs</li>

                <li>Esspress</li>

                <li>YUI</li>

            </ul>

        </div>

    </div>

</body>

</html>




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