tabpanel 动态获取html的内容

xtype:"tabpanel",
activeTab: 0,
region:"center",
items:[
{title:"面板1",id:"mytab",

listeners:
{'render':
function(f)
{Ext.getCmp("mytab").html="afda"
}}
},
{title:"面板2",html:"tab面板2的内容"}
]


var p = new Ext.Panel({
title: ‘My Panel’,
collapsible:true,
width:400,
id:’panel1’,
html:’’
});

方法：

Ext.getCmp(‘panel1’).body.update(‘’);


其实就不用写
三个参数 'title','tabid' 'htmlStr'
new Ext.panel{
title:title,
id : tabid,
html:''
}