用简单的脚本实现一款漂亮的下拉菜单

网络编程 2025/1/24 佚名

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一次偶然而无聊的实验，发现了这样的写下拉菜单的方式。完成作品后的愉悦心情，就像阿基米德泡浴缸却发现了浮力原理！

NAME:Stupid CAT Pull-down Menu v1.0
SUPPORT:Ie(√)  Firefox(√)
STANDARD:XHTML 1.0 Strict / CSS2.0

核心样式：
复制代码代码如下:
html,body{
   background:#000000;
   height:100%;
   font-size:12px;
   font-family:Arial, Helvetica, sans-serif;
   color:#333333;
   margin:20px auto;
   overflow:hidden;
   text-align:center;}
/*菜单容器menu*/
div#menu{
   width:100%;
   height:34px;
   padding:0px 0px 0px 5px;}
/*一级菜单*/
div#menu div{
   width:125px;
   height:20px;
   float:left;
   text-transform:capitalize;
   background:#cccccc;
   padding:5px 0px 0px 0px;
   margin:4px 1px 0px 0px;}
/*二级菜单*/
div#menu div div{
   width:125px;
   height:20px;
   border-bottom:1px #333333 solid;
   background:#666666;
   margin-top:-4px;
   cursor:pointer;
   display:none;}
/*二级菜单中特殊样式（可选）*/
div#menu div div.div1{
   margin-top:3px;
   border-top:1px #333333 solid;}

核心代码：
复制代码代码如下:
var menuItem=document.getElementById("menu").getElementsByTagName("div");
for(i=0;i<menuItem.length;i++){
    menuItem[i].onmouseover=function(){
        var subMenu=this.getElementsByTagName("div");
        for(j=0;j<subMenu.length;j++){
        subMenu[j].style.display="block";
        subMenu[j].onmouseover=function(){this.style.background="#999999";this.style.color="#000000";};
        subMenu[j].onmouseout=function(){this.style.background="#666666";this.style.color="#333333";};}
        this.style.background="#666666"};
    menuItem[i].onmouseout=function(){
        var subMenu=this.getElementsByTagName("div");
        for(j=0;j<subMenu.length;j++){
        subMenu[j].style.display="none";}
        this.style.background="#cccccc"};
    }

<!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="text/html; charset=gb2312" /> <meta name="author" content="Stupid CAT" /> <title>Stupid CAT Pull-down Menu v1.0</title> <style type="text/css"> html,body{    background:#000000;    height:100%;    font-size:12px;    font-family:Arial, Helvetica, sans-serif;    color:#333333;    margin:20px auto;    overflow:hidden;    text-align:center;} /*菜单容器menu*/ div#menu{    width:100%;    height:34px;    padding:0px 0px 0px 5px;} /*一级菜单*/ div#menu div{    width:125px;    height:20px;    float:left;    text-transform:capitalize;    background:#cccccc;    padding:5px 0px 0px 0px;    margin:4px 1px 0px 0px;} /*二级菜单*/ div#menu div div{    width:125px;    height:20px;    border-bottom:1px #333333 solid;    background:#666666;    margin-top:-4px;    cursor:pointer;    display:none;} /*二级菜单中特殊样式（可选）*/ div#menu div div.div1{    margin-top:3px;    border-top:1px #333333 solid;} </style> </head> <body>  menu item1sub menu1sub menu2sub menu3sub menu4 menu item2sub menu1sub menu2sub menu3 menu item3sub menu1sub menu2 menu item4sub menu1sub menu2sub menu3sub menu4 menu item5sub menu1sub menu2sub menu3 menu item6sub menu1sub menu2sub menu3   </body> </html>

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

用简单的脚本实现一款漂亮的下拉菜单