zoukankan      html  css  js  c++  java
  • 三级导航条

    实现代码:

    HTML+CSS:

    <!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>
        <title>三级导航</title>
        <style type="text/css">
            *{margin:0px;padding:0px;}
            ul li{list-style:none;}
            #nav{font:14px/28px Microsoft YaHei;padding:0 20px;background:#f6f6f6;border:1px solid #ccc;margin:20px;_zoom:1;white-space:nowrap;}
            #nav .nav_li{float:left;position:relative;z-index:10;}
            #nav .nav_li h2{font-size:16px;line-height:35px;padding:0 20px;}
            #nav .current{border-left:1px solid #ccc;border-right:1px solid #ccc;background:#ddd;position:relative;z-index:30;}
            #nav .list{position:absolute;top:32px;left:0px;z-index:20;padding:5px;border:1px solid #ccc;background:#ddd;}
            #nav .list .list_li{position:relative;}
            #nav .list .list_li p{padding:0 10px;position:relative;z-index:90;}
            #nav .list .list_li .current{border:1px solid #bbb;border-right:none;background:#ccc;z-index:90;}
            #nav .child_list{position:absolute;top:0px;left:98px;z-index:20;border:1px solid #bbb;background:#ccc;}
            #nav .child_list li{padding:0 10px;position:relative;z-index:20;}
            #nav .list,#nav .child_list{display:none;}
        </style>
    </head>
    <body>
    <div id="nav">
        <ul class="nav_ul">
            <li class="nav_li">
                <h2><a href="#">菜单1</a></h2>
                <div class="list">
                    <ul class="list_ul">
                        <li class="list_li">
                            <p>二级子菜单1</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单2</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单3</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单4</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                    </ul>
                </div>
            </li>
            <li class="nav_li">
                <h2><a href="#">菜单2</a></h2>
                <div class="list">
                    <ul class="list_ul">
                        <li class="list_li">
                            <p>二级子菜单1</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单2</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单3</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单4</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                    </ul>
                </div>
            </li>
            <li class="nav_li">
                <h2><a href="#">菜单3</a></h2>
                <div class="list">
                    <ul class="list_ul">
                        <li class="list_li">
                            <p>二级子菜单1</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单2</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单3</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单4</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                    </ul>
                </div>
            </li>
            <li class="nav_li">
                <h2><a href="#">菜单4</a></h2>
                <div class="list">
                    <ul class="list_ul">
                        <li class="list_li">
                            <p>二级子菜单1</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单2</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单3</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                        <li class="list_li">
                            <p>二级子菜单4</p>
                            <div class="child_list">
                                <ul>
                                    <li><a href="#">三级子菜单1</a></li>
                                    <li><a href="#">三级子菜单2</a></li>
                                    <li><a href="#">三级子菜单3</a></li>
                                    <li><a href="#">三级子菜单4</a></li>
                                    <li><a href="#">三级子菜单5</a></li>
                                </ul>
                            </div>
                        </li>
                    </ul>
                </div>
            </li>
        </ul>
        <div style="clear:both;"></div>
    </div>
    </body>
    </html>
    View Code

    JS:

    <script type="text/javascript">
            window.onload = function () {
                var oDiv = document.getElementById("nav");
                var oLi = oDiv.getElementsByTagName("li");
    
                for (var i = 0; i < oLi.length; i++) {
                    if (oLi[i].className == "nav_li") {
                        oLi[i].onmouseover = function () {
                            var aDiv = this.getElementsByTagName("div")[0];
                            var aH2 = this.getElementsByTagName("h2")[0];
                            aDiv.style.display = "block";
                            aH2.className = "current";
                        }
                        oLi[i].onmouseout = function () {
                            var aDiv = this.getElementsByTagName("div")[0];
                            var aH2 = this.getElementsByTagName("h2")[0];
                            aDiv.style.display = "none";
                            aH2.className = "";
                        }
                    } else if (oLi[i].className == "list_li") {
                        oLi[i].onmouseover = function () {
                            var aDiv = this.getElementsByTagName("div")[0];
                            var aP = this.getElementsByTagName("p")[0];
                            aDiv.style.display = "block";
                            aP.className = "current";
                        }
                        oLi[i].onmouseout = function () {
                            var aDiv = this.getElementsByTagName("div")[0];
                            var aP = this.getElementsByTagName("p")[0];
                            aDiv.style.display = "none";
                            aP.className = "";
                        }
                    }
                }
            }
        </script>

    效果如下图所示:

    高否?富否?帅否? 否? 滚去学习!
  • 相关阅读:
    Momentum Contrast for Unsupervised Visual Representation Learning (MoCo)
    Objective-C Json转Model(利用Runtime特性)
    swift
    关于虚拟机安装mac os 教程详解
    centos快速安装lamp
    第一篇——感悟篇(软工实践)
    2019SDN大作业——负载均衡
    个人作业——软件工程实践总结作业
    2019 SDN上机第7次作业
    2019 SDN上机第6次作业
  • 原文地址:https://www.cnblogs.com/baixc/p/3435696.html
Copyright © 2011-2022 走看看