javascript特效：javascript+div三级导航下拉菜单代码|javascript教程|海乐网

最新推荐文章于 2021-09-08 17:51:20 发布

qiyufeifan

最新推荐文章于 2021-09-08 17:51:20 发布

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CC 4.0 BY-SA版权

文章标签： javascript div function xhtml html border

本文链接：https://blog.youkuaiyun.com/qiyufeifan/article/details/5791178

本文介绍了一个使用JavaScript和CSS实现的三级导航下拉菜单效果。该菜单通过鼠标悬停显示子菜单，并采用简洁的代码实现平滑过渡。文章提供了完整的HTML、CSS样式及JavaScript交互代码。

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="textml; charset=utf-8" />
    <title>javascript特效：javascript+div三级导航下拉菜单代码|javascript教程|海乐网</title>
    <style type="text/css">
    * {
    padding:0;
    margin:0;
    }
    body {
    font-family:verdana, sans-serif;
    font-size:small;
    }
    #navigation, #navigation li ul {
    list-style-type:none;
    }
    #navigation {
    margin:20px;
    }
    #navigation li {
    float:left;
    text-align:center;
    position:relative;
    }
    #navigation li a:link, #navigation li a:visited {
    display:block;
    text-decoration:none;
    color:#000;
    width:120px;
    height:40px;
    line-height:40px;
    border:1px solid #fff;
    border-width:1px 1px 0 0;
    background:#c5dbf2;
    padding-left:10px;
    }
    #navigation li a:hover {
    color:#fff;
    background:#2687eb;
    }
    #navigation li ul li a:hover {
    color:#fff;
    background:#6b839c;
    }
    #navigation li ul {
    display:none;
    position:absolute;
    top:40px;
    left:0;
    margin-top:1px;
    width:120px;
    }
    #navigation li ul li ul {
    display:none;
    position:absolute;
    top:0px;
    left:130px;
    margin-top:0;
    margin-left:1px;
    width:120px;
    }
    </style>
    <script type="text/javascript">
    function displaySubMenu(li) {
    var subMenu = li.getElementsByTagName("ul")[0];
    subMenu.style.display = "block";
    }
    function hideSubMenu(li) {
    var subMenu = li.getElementsByTagName("ul")[0];
    subMenu.style.display = "none";
    }
    </script>
    </head>
    <body>
    <ul id="navigation">
    <li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
    <a href="">海乐网-1</a>
    <ul>
    <li><a href="">栏目1->菜单1</a>
    <li><a href="">栏目1->菜单2</a>
    <li><a href="">栏目1->菜单3</a>
    <li><a href="">栏目1->菜单4</a>
    </ul>
    <li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
    <a href="#">海乐网-2</a>
    <ul>
    <li><a href="">栏目2->菜单1</a>
    <li><a href="">栏目2->菜单2</a>
    <li><a href="">栏目2->菜单3</a>
    <li><a href="">栏目2->菜单4</a>
    <li><a href="">栏目2->菜单5</a>
    </ul>
    <li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
    <a href="">海乐网-3</a>
    <ul>
    <li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
    <a href="">栏目3->菜单1</a>
    <ul>
    <li><a href="">菜单1->子菜单1</a>
    <li><a href="">菜单1->子菜单2</a>
    <li><a href="">菜单1->子菜单3</a>
    <li><a href="">菜单1->子菜单4</a>
    </ul>
    <li><a href="">栏目3->菜单2</a>
    <li onmouseover="displaySubMenu(this)" onmouseout="hideSubMenu(this)">
    <a href="">栏目3->菜单3</a>
    <ul>
    <li><a href="">菜单3->子菜单1</a>
    <li><a href="">菜单3->子菜单2</a>
    <li><a href="">菜单3->子菜单3</a>
    </ul>
    </ul>
    </ul>
    </body>
    </html>