JS CSS implements a tree menu similar to QQ friends and blacklist effects

JS CSS implements a tree menu similar to QQ friends and blacklist effects_javascript skills

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Release： 2016-05-16 15:38:23

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The example in this article describes the JS CSS implementation of a tree menu with effects similar to QQ friends and blacklists. Share it with everyone for your reference. The details are as follows:

The menu introduced today is the best, but some of the icons are missing and the paths are still there. Friends who really want to use it can just make two folding menu icons and upload them according to the paths. This menu is It imitates the menu function of the QQ panel. Many friends still like this function very much. I didn’t expect that it can be implemented with so little JS code. It is worth signing up for.

The screenshot of the running effect is as follows:

The online demo address is as follows:

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

The specific code is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>QQ好友/黑名单的树型菜单</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") &#63; "url()" : "url()";
  menu.style.display = (display == "block") &#63; "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">图秀地带收藏夹</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="#">张三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    <li><a href="#">张三[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="#">张三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    <li><a href="#">张三[10000001]</a></li>
    <li><a href="#">李四[10000002]</a></li>
    </ul>
   </li>
   </ul>
  </li>
  </ul>
 </div>
 </body>
</BODY>
</HTML>

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I hope this article will be helpful to everyone’s JavaScript programming.