实现点击左边菜单,然后右边弹出网页内容。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>www.lanrentuku.com</title>
<style type="text/css">
body{font-size:12px;}
ul,li,h2{margin:0;padding:0;}
ul{list-style:none;}
#top{900px;height:40px;margin:0 auto;background-color:#CCCC00}
#top h2{150px;height:40px;background-color:#99CC00;float:left;font-size:14px;text-align:center;line-height:40px;}
#topTags{750px;height:40px;margin:0 auto;background-color:#CCCC00;float:left}
#topTags ul li{float:left;100px;height:25px;margin-right:5px;display:block;text-align:center;cursor:pointer;padding-top:15px;}
#main{900px;height:500px;margin:0 auto;background-color:#F5F7E6;}
#leftMenu{150px;height:500px;background-color:#009900;float:left}
#leftMenu ul{margin:10px;}
#leftMenu ul li{130px;height:30px;display:block;background:#99CC00;cursor:pointer;line-height:30px;text-align:center;margin-bottom:5px;}
#leftMenu ul li a{color:#000000;text-decoration:none;display:block;height:100%;/*将a填满整个li,要不不点击到a无法加载页面*/}
#content{750px;height:500px;float:left}
.content{740px;height:490px;display:none;padding:5px;overflow-y:auto;line-height:30px;}
.content iframe{100%;height:100%}
#footer{900px;height:30px;margin:0 auto;background-color:#ccc;line-height:30px;text-align:center;}
.content1 {740px;height:490px;display:block;padding:5px;overflow-y:auto;line-height:30px;}
</style>
<script type="text/javascript">
    window.onload = function () {
        function $(id) { return document.getElementById(id) }
        var menu = $("topTags").getElementsByTagName("ul")[0]; //顶部菜单容器
        var tags = menu.getElementsByTagName("li"); //顶部菜单
        var ck = $("leftMenu").getElementsByTagName("ul")[0].getElementsByTagName("li"); //左侧菜单
        var j;
        //点击左侧菜单增加新标签
        for (i = 0; i < ck.length; i++) {
            ck[i].onclick = function () {
                $("welcome").style.display = "none"//欢迎内容隐藏
                //循环取得当前索引
                for (j = 0; j < 8; j++) {
                    if (this == ck[j]) {
                        if ($("p" + j) == null) {
                            openNew(j, this.innerHTML); //设置标签显示文字
                        }
                        clearStyle();
                        $("p" + j).style.backgroundColor = "yellow";
                        clearContent();
                        $("c" + j).style.display = "block";
                    }
                }
               // return false;
            }
        }
        //增加或删除标签
        function openNew(id, name) {
            var tagMenu = document.createElement("li");
            tagMenu.id = "p" + id;
            tagMenu.innerHTML = name + "   " + "<img src='#' style='vertical-align:middle'/>";
            //标签点击事件
            tagMenu.onclick = function (evt) {
                clearStyle();
                tagMenu.style.backgroundColor = "yellow";
                clearContent();
                $("c" + id).style.display = "block";
            }
            //标签内关闭图片点击事件
            tagMenu.getElementsByTagName("img")[0].onclick = function (evt) {
                evt = (evt) ? evt : ((window.event) ? window.event : null);//解决浏览器兼容性问题
                if (evt.stopPropagation) { evt.stopPropagation() } //取消opera和Safari冒泡行为;
                this.parentNode.parentNode.removeChild(tagMenu); //删除当前标签
                var color = tagMenu.style.backgroundColor;
                //设置如果关闭一个标签时,让最后一个标签得到焦点
                if (color == "#ffff00" || color == "yellow") {//区别浏览器对颜色解释
                    if (tags.length - 1 >= 0) {
                        clearStyle();
                        tags[tags.length - 1].style.backgroundColor = "yellow";
                        clearContent();
                        var cc = tags[tags.length - 1].id.split("p");
                        $("c" + cc[1]).style.display = "block";
                    }
                    else {
                        clearContent();
                        $("welcome").style.display = "block"
                    }
                }
            }
            menu.appendChild(tagMenu);
        }
        //清除标签样式
        function clearStyle() {
            for (i = 0; i < tags.length; i++) {
                menu.getElementsByTagName("li")[i].style.backgroundColor = "#FFCC00";
            }
        }
        //清除内容
        function clearContent() {
            for (i = 0; i < 7; i++) {
                $("c" + i).style.display = "none";
            }
        }
    }
</script>
</head>
<body>
<div id="top">
    <h2>管理菜单</h2>
    <div id="topTags">
        <ul>
        </ul>
    </div>
</div>
<div id="main"> 
    <div id="leftMenu">
        <ul>
        <li><a href="个人资料.html" target="content1">个人资料</a></li>
        <li><a href="相册管理.html" target="content2">相册管理</a></li>
        <li><a href="日志管理.html" target="content3">日志管理</a></li>
        <li><a href="留言管理.html" target="content4">留言管理</a></li>
        <li><a href="风格管理.html" target="content5">风格管理</a></li>
        <li><a href="系统管理.html" target="content6">系统管理</a></li>
        <li><a href="帮助信息.html" target="content7">帮助信息</a></li>
        </ul>
    </div>
    <div id="content">
        <div id="welcome" class="content" style="display:block;">
            <div align="center">
                <p> </p>
                <p><strong>欢迎使用用户管理系统!</strong></p>
                <p> </p>
            </div>
        </div>
        <div id="c0" class="content"><iframe name="content1" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c1" class="content"><iframe name="content2" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c2" class="content"><iframe name="content3" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c3" class="content"><iframe name="content4" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c4" class="content"><iframe name="content5" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c5" class="content"><iframe name="content6" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
        <div id="c6" class="content"><iframe name="content7" frameborder="0" marginheight="0" marginwidth="0" scrolling="auto"></iframe></div>
    </div>
</div>
<div id="footer">copyright for lalasxc </div>
</body>
</html>
原文地址:https://www.cnblogs.com/liyuhuan/p/5427816.html