今天介紹的這個(gè)菜單堪稱極品啊，不過里面的有些圖標(biāo)丟失了，路徑還留在那，真想使用的朋友自己制作兩個(gè)折疊菜單的圖標(biāo)按路徑傳上去就行了，這個(gè)菜單是模仿QQ面板的菜單功能，很多朋友還是很喜歡這種功能的，沒想到用這么少的JS代碼也可實(shí)現(xiàn) ，值得代簽哦。

運(yùn)行效果截圖如下：

在線演示地址如下：

http://demo.jb51.net/js/2015/js-css-qq-hy-hmd-style-menu-codes/

具體代碼如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>QQ好友/黑名單的樹型菜單</TITLE>
</HEAD>
<BODY>
<script>
if (!document.getElementById)
 document.getElementById = function() { return null; }
function initializeMenu(menuId, actuatorId) {
 var menu = document.getElementById(menuId);
 var actuator = document.getElementById(actuatorId);
 if (menu == null || actuator == null) return;
 actuator.parentNode.style.backgroundImage = "url()";
 actuator.onclick = function() {
  var display = menu.style.display;
  this.parentNode.style.backgroundImage =
   (display == "block") ? "url()" : "url()";
  menu.style.display = (display == "block") ? "none" : "block";
  return false;
 }
}
 window.onload = function() {
   initializeMenu("productsMenu", "productsActuator");
   initializeMenu("newPhonesMenu", "newPhonesActuator");
   initializeMenu("compareMenu", "compareActuator");
  }
</script>
<style>
body {
 font-family: verdana, helvetica, arial, sans-serif;
}
#mainMenu {
 background-color: #EEE;
 border: 1px solid #CCC;
 color: #000;
 width: 203px;
}
#menuList {
 margin: 0px;
 padding: 10px 0px 10px 15px;
}
li.menubar {
 background: url() no-repeat 0em 0.3em;
 font-size: 12px;
 line-height: 1.5em;
 list-style: none outside;
}
.menu, .submenu {
 display: none;
 margin-left: 15px;
 padding: 0px;
}
.menu li, .submenu li {
 background: url() no-repeat 0em 0.3em;
 list-style: none outside;
}
a.actuator {
 background-color: transparent;
 color: #000;
 font-size: 12px;
 padding-left: 15px;
 text-decoration: none;
}
a.actuator:hover {
 text-decoration: underline;
}
.menu li a, .submenu li a {
 background-color: transparent;
 color: #000;
 font-size: 12px;
 padding-left: 15px;
 text-decoration: none;
}
.menu li a:hover, submenu li a:hover {
 text-decoration: underline;
}
span.key {
 text-decoration: underline;
}
</style>
</head>
<body>
<div id="mainMenu">
  <ul id="menuList">
  <li class="menubar">
   <a href="#" id="productsActuator" class="actuator">圖秀地帶收藏夾</a>
   <ul id="productsMenu" class="menu">
   <li>
    <a href="#" id="newPhonesActuator" class="actuator">我的好友</a>
    <ul id="newPhonesMenu" class="submenu">
    <li><a href="#">張三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    <li><a href="#">張三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    </ul>
   </li>
   <li>
    <a href="#" id="compareActuator" class="actuator">陌生人</a>
    <ul id="compareMenu" class="submenu">
    <li><a href="#">張三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    <li><a href="#">張三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    </ul>
   </li>
   </ul>
  </li>
  </ul>
 </div>
 </body>
</BODY>
</HTML>

希望本文所述對(duì)大家的JavaScript程序設(shè)計(jì)有所幫助。

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