id:节点id,这个很重要到加载远程服务器数据 which is important to load remote data

text: 显示的节点文本

state: 节点状态, 'open' 或者 'closed', 默认是 'open'. 当设置为 'closed', 节点所有的子节点将从远程服务器站点加载

checked: 指明检查节点是否选中. 

attributes: 可以添加到节点的自定义属性 

[{

    "id":1,

    "text":"根类",

    "attributes":{"url":""},

    "children":[{

        "id":11,

        "text":"系统类",

        "attributes":{"url":""},

        "children":[{

            "id":110,

            "text":"操作类",

            "attributes":{"url":"manage/class/class.html"}

        },{

            "id":112,

            "text":"模块类",

            "attributes":{"url":"manage/class/class.html"}

        },{

            "id":113,

            "text":"人员类",

            "attributes":{"url":"manage/class/class.html"}

        }]

    }

}]

onClick:function(node)

            {

                var tabTitle =node.text;

                var id = node.id;

                var url=node.attributes.url;

                var icon = node.iconCls;

                if(url){

                    //addTab(id,tabTitle, url, icon);

                }

            }