ext extedn传值问题？

[code="java"]

JBXX_Panel = Ext.extend(Ext.I.RoleCrudPanel, {

id: "JBXX_PanelId",   
title: "测试",   
//width: 400,   
//height: 300,   
//这个是数据源url   
baseUrl: "DATA/B_BSC/BscPager.aspx",   
storeMapping: ["bh_bsc","bscmc","jc"],   
ID: "bh_swdjh",// 编辑与删除标记   
inportUri:"DATA/InToExcel.aspx",
RoleId:null , 


constructor: function(){   

        alert(this.RoleId);  //取不到值 为空

    this.sm = new Ext.grid.CheckboxSelectionModel();   

    this.cm = new Ext.grid.ColumnModel([   
        new Ext.grid.RowNumberer(),//获得行号   
        this.sm,{   
            header:"名称",   
            dataIndex:"mc",  
            sortable:true  
        }   
    ]);   

    JBXX_Panel.superclass.constructor.call(this);   

}   
});

在调用的时候
Panel = new JBXX_Panel({

               RoleId:"aaaaa"  //怎么把 这个 RoleId 传入进去呢 ？

            });[/code]

这样就可以了
[code="js"]
JBXX_Panel = Ext.extend(Ext.I.RoleCrudPanel, {
id : "JBXX_PanelId",
title : "测试",
baseUrl : "DATA/B_BSC/BscPager.aspx",
storeMapping : ["bh_bsc", "bscmc", "jc"],
ID : "bh_swdjh",
inportUri : "DATA/InToExcel.aspx",
RoleId : null,
constructor : function(cfg) {
JBXX_Panel.superclass.constructor.call(this,cfg);
alert(this.RoleId);
this.sm = new Ext.grid.CheckboxSelectionModel();
this.cm = new Ext.grid.ColumnModel([new Ext.grid.RowNumberer(),// 获得行号
this.sm, {
header : "名称",
dataIndex : "mc",
sortable : true
}]);
JBXX_Panel.superclass.constructor.call(this);
}
});
Ext.onReady(function() {
Panel = new JBXX_Panel({

RoleId:"aaaaa"

});
})
[/code]

ext extedn传值问题 ？

ext extedn传值问题？