EXTJS4.2 后台管理菜单栏

EXTJS 代码：

第一种方法：

{
        title: '汽车信息管理',
        layout: 'fit',
        items: [
            {
                xtype: 'treepanel',
                border: 0,
                rootVisible: false,
                root: {
                    expanded: true,
                    children: [
                       {
                           text: '汽车信息管理1',
                           leaf: true,
                           id: '/UI/Page/ProductManagement/ui_html_PKU_Car/PM_CT_CarType.html'
                       }, {
                           text: '汽车信息管理2',
                           leaf: true,
                           id: '/UI/Page/ProductManagement/ui_html_PKU_Car/PM_CT_CarType.html1'
                       },
                    ]
                },
                listeners: {
                    //添加节点点击事件    
                    itemclick: function (v, r, item) {
                        var n = tab.getComponent(r.raw.id);
                        if (r.raw.id == 'root') {
                            return;
                        }
                        if (!n) { // 判断是否已经打开该面板
                            n = tab.add({
                                'id': r.raw.id,
                                'title': r.raw.text,
                                closable: true, // 通过html载入目标页
                                html: '<iframe scrolling="auto" frameborder="0" width="100%" height="100%" src="' + r.raw.id + '"></iframe>'
                            });
                        }
                        tab.setActiveTab(n);
                    }
                }
            }
        ]
    },

第二种写法：

{
             title: '实体商品订单管理',
             xtype: 'treepanel',
             expanded: true,
             animate: true,
             enableDD: false,
             border: false,
             containerScroll: true,
             root: {
                 text: '实体商品订单管理',
                 id: 'root',
                 children: [{
                     text: '买家查看',
                     leaf: true,
                     id: '/UI/Page/ProductManagement/ui_html_Orders/ui_html_Orders_Real_byBuyer.html'
                 }, {
                     text: '卖家查看',
                     leaf: true,
                     id: '/UI/Page/ProductManagement/ui_html_Orders/ui_html_Orders_Real_bySeller.html'
                 }, {
                     text: '商品类型(汽车配件)',
                     leaf: true,
                     id: '/UI/Page/ProductManagement/ui_html_Orders/ui_html_Orders_Real_byProductModelForCarPart.html'
                 }, {
                     text: '商品类型(汽车用品)',
                     leaf: true,
                     id: '/UI/Page/ProductManagement/ui_html_Orders/ui_html_Orders_Real_byProductModelForCarAcce.html'
                 }]
             },
             listeners: {
                 //添加节点点击事件    
                 itemclick: function (v, r, item) {
                     var n = tab.getComponent(r.raw.id);
                     if (r.raw.id == 'root') {
                         return;
                     }
                     if (!n) { // 判断是否已经打开该面板
                         n = tab.add({
                             'id': r.raw.id,
                             'title': r.raw.text,
                             closable: true, // 通过html载入目标页
                             html: '<iframe scrolling="auto" frameborder="0" width="100%" height="100%" src="' + r.raw.id + '"></iframe>'
                         });
                     }
                     tab.setActiveTab(n);
                 }
             }
         }