Ztree手风琴效果(第三版)

第一版：点击一级目录展开，再点击时不能收回

第二版：点击一级目录展开，再点击时可以收回

第三版：优化样式，修复主菜单下的子菜单下级无子节点时点击无反应问题(js报错)

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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE html>
<html>
<head>
    <title> ZTREE STYLE </title>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <link rel="stylesheet" href="css/zTreeStyle.css" type="text/css">
    <script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>
    <script type="text/javascript" src="js/jquery.ztree.core.js"></script>
    <script type="text/javascript">
        var curMenu = null, zTree_Menu = null;
        var setting = {
            view: {
                showLine: false,
                selectedMulti: false,
                dblClickExpand: false,
                expandSpeed: 500
            },
            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) {
            var flag = node.open;
            if (node.isParent) {
                if (node.level === 0) {
                    var pNode = curMenu;
                    while (pNode && pNode.level !==0) {
                        pNode = pNode.getParentNode();
                    }
                    if (pNode !== node && pNode!= null) {
                        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&lt;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];
                    }
                    if (flag) {
                        zTree_Menu.expandNode(node, false);
                    } else {
                        zTree_Menu.expandNode(node, true);
                    }
                } 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");
            if(zTree_Menu.getNodes()[0].children[0].hasOwnProperty("children")){
                curMenu = zTree_Menu.getNodes()[0].children[0].children[0];
            }else{
                curMenu = zTree_Menu.getNodes()[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:100%;
            height: 30px;
            text-align: center;
            display:block;
            /* background-color: #0B61A4;  */
            border-bottom:1px silver solid;
            text-decoration:none;
        }
         
        .ztree li a.level0.cur {
            /* background-color: #66A3D2; */
        }
         
        .ztree li a.level0 span {
            display: block;
            font-family:"微软雅黑", "宋体", Arial, sans-serif;
            font-size:14px;
            font-weight: bold;
            word-spacing:2px;
            line-height:26px;
        }
         
        .ztree li a.level0 span.button {   
            float:right;
            visibility: visible;
            display:none;
        }
         
        .ztree li span.button.switch.level0 {
            display:none;
        }
    </style>
 </head>
 
<body>
    <div style="width:100%; height:500px">
        <div style="width:20%; height:100%; border:1px silver solid">
            <ul id="treeDemo" class="ztree"></ul>
        </div>
    </div>
</body>
</html>

 

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