本文实例为大家分享了javascript鼠标滑过显示二级菜单效果,供大家参考,具体内容如下
1. 关键代码:使用 switch 或 if 判断语句,改变对应的二级菜单显示方式为 block 或 none
function selectTabMenu(i){ switch(i){ case 71: document.getElementById(\"TabMenuCon71\").style.display=\"block\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; ... } }
2. 主导航 绑定事件
<ul class=\"nav\">
<li><a href=\"#\" onmouseover=\"selectTabMenu(71)\">首页</a></li>
3. 二级菜单
<ul id=\"TabMenuCon71\" class=\"TabMenuCon\"> <li><a href=\"#\">公告</a></li> <li><<a href=\"#\">信息</a></li> </ul>
4. 完整代码
<!DOCTYPE html> <html lang=\"en\"> <head> <meta charset=\"UTF-8\"> <title>水平导航-二级菜单</title> <style type=\"text/css\"> *{ padding:0px; margin: 0px; } .navBar{ height: 30px; background-color: #2B383E; text-align: center; } ul{ list-style: none; } .nav li{ float: left; } .nav li a{ display: block; padding: 0 20px; height: 30px; line-height: 30px; text-decoration: none; color: #fff; } .nav li a:hover{ background-color: #fff; color: #4DB6E7 } .TabMenuCon{ clear: both; display: none; } .TabMenuCon li{ display: inline-block; } </style> <script type=\"text/javascript\"> function selectTabMenu(i){ switch(i){ case 71: document.getElementById(\"TabMenuCon71\").style.display=\"block\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; case 72: document.getElementById(\"TabMenuCon71\").style.display=\"none\"; document.getElementById(\"TabMenuCon72\").style.display=\"block\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; case 73: document.getElementById(\"TabMenuCon71\").style.display=\"none\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"block\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; case 74: document.getElementById(\"TabMenuCon71\").style.display=\"none\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"block\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; case 75: document.getElementById(\"TabMenuCon71\").style.display=\"none\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"block\"; document.getElementById(\"TabMenuCon76\").style.display=\"none\"; break; case 76: document.getElementById(\"TabMenuCon71\").style.display=\"none\"; document.getElementById(\"TabMenuCon72\").style.display=\"none\"; document.getElementById(\"TabMenuCon73\").style.display=\"none\"; document.getElementById(\"TabMenuCon74\").style.display=\"none\"; document.getElementById(\"TabMenuCon75\").style.display=\"none\"; document.getElementById(\"TabMenuCon76\").style.display=\"block\"; break; } } </script> </head> <body> <div class=\"navBar\"> <ul class=\"nav\"> <li><a href=\"#\" onmouseover=\"selectTabMenu(71)\">首页</a></li> <li><a href=\"#\" onmouseover=\"selectTabMenu(72)\">关于协会</a></li> <li><a href=\"#\" onmouseover=\"selectTabMenu(73)\">协会动态</a></li> <li><a href=\"#\" onmouseover=\"selectTabMenu(74)\">协会活动</a></li> <li><a href=\"#\" onmouseover=\"selectTabMenu(75)\">会员</a></li> <li><a href=\"#\" onmouseover=\"selectTabMenu(76)\">资源空间</a></li> </ul> </div> <div id=\"TabMenuCon\"> <ul id=\"TabMenuCon71\" class=\"TabMenuCon\"> <li><a href=\"#\">公告</a></li> <li><<a href=\"#\">信息</a></li> </ul> <ul id=\"TabMenuCon72\" class=\"TabMenuCon\"> <li>协会简介</li> <li>组织机构</li> <li>协会章程</li> </ul> <ul id=\"TabMenuCon73\" class=\"TabMenuCon\"> <li>协会新闻</li> <li>活动预告</li> <li>求职招聘</li> </ul> <ul id=\"TabMenuCon74\" class=\"TabMenuCon\"> <li>义务维修月</li> <li>平面设计活动</li> <li>程序设计活动</li> <li>户外拓展</li> </ul> <ul id=\"TabMenuCon75\" class=\"TabMenuCon\"> <li>会员登录</li> <li>会员注册</li> <li>缴纳会费</li> <li>会员信息管理</li> <li>修改密码</li> </ul> <ul id=\"TabMenuCon76\" class=\"TabMenuCon\"> <li>PS教程</li> <li>前端设计</li> <li>Flash教程</li> </ul> </div> </body> </html>
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