jquery实现树形菜单完整代码

2019-11-20 10:53:48

字体：大中小

来源：转载

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本实例实现了树形的动态菜单，兼容IE8,火狐，Chrome等浏览器。使用了jQuery的toggle() 方法。效果和代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>jquery的树形菜单代码 </title><meta name="keywords" content="www.cnblogs.com/jihua"/><style type="text/css">body { font-family:"宋体"; font-size: 12px; line-height: 1.5em; color:#7FB0C8; padding:0; margin:0; background: #336699;}ul,ol,li,dl,dt,dd { margin:0; padding:0; list-style-type:none;}h1,h2,h3,form,input,iframe,span { margin:0; padding:0;} a { color:#7FB0C8;}a:link {color: #7FB0C8; TEXT-DECORATION: none;}a:visited {color: #7FB0C8; TEXT-DECORATION: none;}a:hover {color: #fff; TEXT-DECORATION: none;}.white { color:#fff;}.white a:link {color: #fff; TEXT-DECORATION: none;}.white a:visited {color: #fff; TEXT-DECORATION: none;}.white a:hover {color: #73E1F5; TEXT-DECORATION: none;}/* 树形菜单开始 */.close { float:right; clear:right; font-size:12px; font-weight:normal; cursor:pointer; padding-right:10px;}.title { font-size:14px; color:#fff; margin-bottom:10px; padding-left:5px; width:290px;}.menu { width:290px; height:330px; margin-bottom:10px;}.l1 { background:#000; font-size:13px; padding:5px 0 0 30px; height:20px; margin-bottom:5px; cursor:pointer;}.slist { margin:0 0 5px 0; display:none;}.l2 { padding:0 0 0 35px; font-size:13px;}.l2 a { padding:6px 0 0 5px; width:230px; height:21px; display:block;} .currentl2 a,.l2 a:hover { background:#1E5A82; color:#fff;}.sslist { background:#156890; width:235px; overflow:hidden; margin:0 0 5px 35px; display:none;}.l3 a { padding:6px 0 0 5px; width:230px; height:20px; display:block;} .currentl3 a,.l3 a:hover { color:#fff; font-weight:bold;}</style><script type="text/javascript" src="http://keleyi.com/keleyi/pmedia/jquery/jquery-1.4.2.min.js"></script><script type="text/javascript"> // 树状菜单 $(document).ready(function () { $(".l1").toggle(function () {  $(".slist").animate({ height: 'toggle', opacity: 'hide' }, "slow");  $(this).next(".slist").animate({ height: 'toggle', opacity: 'toggle' }, "slow"); }, function () {  $(".slist").animate({ height: 'toggle', opacity: 'hide' }, "slow");  $(this).next(".slist").animate({ height: 'toggle', opacity: 'toggle' }, "slow"); }); $(".l2").toggle(function () {  $(this).next(".sslist").animate({ height: 'toggle', opacity: 'toggle' }, "slow"); }, function () {  $(this).next(".sslist").animate({ height: 'toggle', opacity: 'toggle' }, "slow"); }); $(".l2").click(function () {  $(".l3").removeClass("currentl3");  $(".l2").removeClass("currentl2");  $(this).addClass("currentl2"); }); $(".l3").click(function () {  $(".l3").removeClass("currentl3");  $(this).addClass("currentl3"); }); $(".close").toggle(function () {  $(".slist").animate({ height: 'toggle', opacity: 'show' }, "fast");  $(".sslist").animate({ height: 'toggle', opacity: 'show' }, "fast"); }, function () {  $(".slist").animate({ height: 'toggle', opacity: 'hide' }, "fast");  $(".sslist").animate({ height: 'toggle', opacity: 'hide' }, "fast"); }); });</script></head><body><h1 class="title"><span class="close">全部收起/展开</span>Jihua树形菜单</h1><div class="menu"> <h1 class="l1">一级菜单</h1> <div class="slist"> <h2 class="l2"><a href="#">二级菜单</a></h2> <ul class="sslist"> <li class="l3"><a href="#">・三级菜单</a></li> <li class="l3"><a href="#">・三级菜单</a></li> <li class="l3"><a href="#" target="_blank">・jihua.cnblogs.com</a></li> <li class="l3"><a href="#">・三级菜单</a></li> </ul> <h2 class="l2"><a href="#">二级菜单</a></h2> <ul class="sslist"> <li class="l3"><a href="#">・三级菜单</a></li> <li class="l3"><a href="#">・三级菜单</a></li> <li class="l3"><a href="#" target="_blank">・三级菜单</a></li> <li class="l3"><a href="#">・三级菜单</a></li> </ul> <h2 class="l2"><a href="#">二级VeVB.COm</a></h2> </div> <h1 class="l1">一级脚本</h1> <div class="slist"> <h2 class="l2"><a href="#">二级菜单计划</a></h2> <h2 class="l2"><a href="#">二级菜单</a></h2> <h2 class="l2"><a href="#">二级菜单</a></h2> </div> <h1 class="l1">一级菜单</h1> <div class="slist"> <h2 class="l2"><a href="#">二级菜单</a></h2> <h2 class="l2"><a href="#">二级菜单</a></h2> <h2 class="l2"><a href="#">二级菜单</a></h2> </div></div></body></html>

本实例用到jquery的toggle() 方法，介绍如下：

定义和用法

toggle() 方法切换元素的可见状态。

如果被选元素可见，则隐藏这些元素，如果被选元素隐藏，则显示这些元素。

语法
$(selector).toggle(speed,callback,switch)