本文實例講述了基于jquery實現的樹形菜單效果代碼。分享給大家供大家參考。具體如下：
這是一款基于jquery實現的樹形菜單代碼，點擊菜單項可以向下滑出對應的二級菜單，效果流暢自然。
先來看看運行效果截圖：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/jquery-tree-style-show-menu-codes/
具體代碼如下：
<!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的樹形菜單代碼 </title><style>body { font-family:"宋體"; 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;}/* 樹形菜單開始 */.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; overflow-y:auto; overflow-x:hidden; margin-bottom:10px;}.menu { SCROLLBAR-FACE-COLOR: #002537; SCROLLBAR-HIGHLIGHT-COLOR: #002537; SCROLLBAR-SHADOW-COLOR: #0E6893; SCROLLBAR-3DLIGHT-COLOR: #0E6893; SCROLLBAR-ARROW-COLOR: #fff; SCROLLBAR-TRACK-COLOR: #053d58;SCROLLBAR-DARKSHADOW-COLOR: #002537; SCROLLBAR-BASE-COLOR: #01152a;}.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="jquery1.3.2.js"></script><script>// 樹狀菜單$(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: 'hide'}, "fast"); $(".sslist").animate({height: 'toggle', opacity: 'hide'}, "fast"); },function(){ $(".slist").animate({height: 'toggle', opacity: 'show'}, "fast"); $(".sslist").animate({height: 'toggle', opacity: 'show'}, "fast"); }); });</script></head><body><h1 class="title"><span class="close">全部收起/展開</span>樹形菜單</h1><div class="menu"> <h1 class="l1">一級菜單1</h1> <div class="slist"> <h2 class="l2"><a href="javascript:function()">二級菜單1</a></h2> <ul class="sslist"> <li class="l3"><a href="javascript:function()">?三級菜單1</a></li> <li class="l3"><a href="javascript:function()">?三級菜單1</a></li> <li class="l3"><a href="javascript:function()">?三級菜單1</a></li> <li class="l3"><a href="javascript:function()">?三級菜單1</a></li> </ul> <h2 class="l2"><a href="javascript:function()">二級菜單2</a></h2> <ul class="sslist"> <li class="l3"><a href="javascript:function()">?三級菜單2</a></li> <li class="l3"><a href="javascript:function()">?三級菜單2</a></li> <li class="l3"><a href="javascript:function()">?三級菜單2</a></li> <li class="l3"><a href="javascript:function()">?三級菜單2</a></li> </ul> <h2 class="l2"><a href="javascript:function()">二級菜單3</a></h2> </div> <h1 class="l1">一級菜單2</h1> <div class="slist"> <h2 class="l2"><a href="javascript:function()">二級菜單2</a></h2> <h2 class="l2"><a href="javascript:function()">二級菜單2</a></h2> <h2 class="l2"><a href="javascript:function()">二級菜單2</a></h2> </div> <h1 class="l1">一級菜單3</h1> <div class="slist"> <h2 class="l2"><a href="javascript:function()">二級菜單3</a></h2> <h2 class="l2"><a href="javascript:function()">二級菜單3</a></h2> <h2 class="l2"><a href="javascript:function()">二級菜單3</a></h2> </div></div></body></html>希望本文所述對大家的jquery程序設計有所幫助。
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