效果图：
代码：
<!DOCTYPE html> <HTML> <HEAD> <TITLE> ZTREE DEMO - left_menu</TITLE> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" href="../../../css/demo.css" type="text/css"> <link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css"> <script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script> <script type="text/javascript" src="../../../js/jquery.ztree.core.js"></script> <!-- <script type="text/javascript" src="../../../js/jquery.ztree.excheck.js"></script> <script type="text/javascript" src="../../../js/jquery.ztree.exedit.js"></script>--> <SCRIPT type="text/javascript"> <!-- var curMenu = null, zTree_Menu = null; var setting = { view: { showLine: true, selectedMulti: false, dblClickExpand: false }, data: { simpleData: { enable: true } }, callback: { onNodeCreated: this.onNodeCreated, beforeClick: this.beforeClick, onClick: this.onClick } }; var zNodes =[ { id:1, pId:0, name:"主菜单 1", open:true}, { id:11, pId:1, name:"子菜单 1-1"}, { id:111, pId:11, name:"叶子节点 1-1-1"}, { id:112, pId:11, name:"叶子节点 1-1-2"}, { id:113, pId:11, name:"叶子节点 1-1-3"}, { id:114, pId:11, name:"叶子节点 1-1-4"}, { id:12, pId:1, name:"子菜单 1-2"}, { id:121, pId:12, name:"叶子节点 1-2-1"}, { id:122, pId:12, name:"叶子节点 1-2-2"}, { id:123, pId:12, name:"叶子节点 1-2-3"}, { id:124, pId:12, name:"叶子节点 1-2-4"}, { id:2, pId:0, name:"主菜单 2"}, { id:21, pId:2, name:"子菜单 2-1"}, { id:211, pId:21, name:"叶子节点 2-1-1"}, { id:212, pId:21, name:"叶子节点 2-1-2"}, { id:213, pId:21, name:"叶子节点 2-1-3"}, { id:214, pId:21, name:"叶子节点 2-1-4"}, { id:22, pId:2, name:"子菜单 2-2"}, { id:221, pId:22, name:"叶子节点 2-2-1"}, { id:222, pId:22, name:"叶子节点 2-2-2"}, { id:223, pId:22, name:"叶子节点 2-2-3"}, { id:224, pId:22, name:"叶子节点 2-2-4"}, { id:3, pId:0, name:"主菜单 3"}, { id:31, pId:3, name:"子菜单 3-1"}, { id:311, pId:31, name:"叶子节点 3-1-1"}, { id:312, pId:31, name:"叶子节点 3-1-2"}, { id:313, pId:31, name:"叶子节点 3-1-3"}, { id:314, pId:31, name:"叶子节点 3-1-4"}, { id:32, pId:3, name:"子菜单 3-2"}, { id:321, pId:32, name:"叶子节点 3-2-1"}, { id:322, pId:32, name:"叶子节点 3-2-2"}, { id:323, pId:32, name:"叶子节点 3-2-3"}, { id:324, pId:32, name:"叶子节点 3-2-4"} ]; function beforeClick(treeId, node) { if (node.isParent) { if (node.level === 0) { var pNode = curMenu; while (pNode && pNode.level !==0) { pNode = pNode.getParentNode(); } if (pNode !== node) { var a = $("#" + pNode.tId + "_a"); a.removeClass("cur"); zTree_Menu.expandNode(pNode, false); } a = $("#" + node.tId + "_a"); a.addClass("cur"); var isOpen = false; for (var i=0,l=node.children.length; i<l; i++) { if(node.children[i].open) { isOpen = true; break; } } if (isOpen) { zTree_Menu.expandNode(node, true); curMenu = node; } else { zTree_Menu.expandNode(node.children[0].isParent?node.children[0]:node, true); curMenu = node.children[0]; } } else { zTree_Menu.expandNode(node); } } return !node.isParent; } function onClick(e, treeId, node) { alert("Do what you want to do!"); } $(document).ready(function(){ $.fn.zTree.init($("#treeDemo"), setting, zNodes); zTree_Menu = $.fn.zTree.getZTreeObj("treeDemo"); curMenu = zTree_Menu.getNodes()[0].children[0].children[0]; zTree_Menu.selectNode(curMenu); var a = $("#" + zTree_Menu.getNodes()[0].tId + "_a"); a.addClass("cur"); }); //--> </SCRIPT> <style type="text/css"> .ztree li a.level0 {width:200px;height: 20px; text-align: center; display:block; background-color: #0B61A4; border:1px silver solid;} .ztree li a.level0.cur {background-color: #66A3D2; } .ztree li a.level0 span {display: block; color: white; padding-top:3px; font-size:12px; font-weight: bold;word-spacing: 2px;} .ztree li a.level0 span.button { float:right; margin-left: 10px; visibility: visible;display:none;} .ztree li span.button.switch.level0 {display:none;} </style> </HEAD> <BODY> <h1>左侧菜单</h1> <h6>[ 文件路径: super/left_menu.html ]</h6> <div class="content_wrap"> <div class="zTreeDemoBackground left"> <ul id="treeDemo" class="ztree"></ul> </div> <div class="right"> <ul class="info"> <li class="title"><h2>实现方法说明</h2> <ul class="list"> <li>在 “Demo 演示”中的左侧菜单就是用 zTree 实现的，主要是靠 css 样式负责排版，利用 setting 中的配置进行功能制作，本 Demo 对实现 左侧菜单进行简单的介绍，你也可以通过查看 “Demo 演示”页面的源码深入了解。</li> <li class="highlight_red">1、关于 css 完全可以根据自己的需要进行个性化调整，例如：此 Demo 的菜单样式 就 与 “Demo 演示”页面的不一样，仅供对比参考</li> <li class="highlight_red">2、主要用到的配置有：<br/> setting.view.showIcon / showLine / selectedMulti / dblClickExpand<br/> setting.callback.onNodeCreated / beforeClick / onClick </li> <li>3、是否需要限制单一路径展开，完全由你的需求而定，实现代码可参考 "保持展开单一路径"</li> <li>4、其他辅助规则，请根据实际情况自行编写</li> </ul> </li> </ul> </div> </div> </BODY> </HTML>
