简单tab的应用，参考例子
var tabs = new Ext.TabPanel(
{
renderTo: 'tabs1',
width:450,
activeTab: 0,
frame:true,
defaults:{autoHeight: true},
items:[
{contentEl:'script', title: 'Short Text'},
{contentEl:'markup', title: 'Long Text'}
]
});
tab的激活事件
在item的配置中增加
listeners: {activate: handleActivate}
handleActivate是一个方法，也就是当激活某一个tab的时候，就会调用这个方法。
// second tabs built from JS
var tabs2 = new Ext.TabPanel({
renderTo: document.body,
activeTab: 0,
width:600,
height:250,
plain:true,
defaults:{autoScroll: true},
items:[{
title: 'Normal Tab',
html: "My content was added during construction."
},{
title: 'Ajax Tab 1',
autoLoad:'ajax1.htm'
},{
title: 'Ajax Tab 2',
autoLoad: {url: 'ajax2.htm', params: 'foo=bar&wtf=1'}
},{
title: 'Event Tab',
listeners: {activate: handleActivate},
html: "I am tab 4's content. I also have an event listener attached."
},{
title: 'Disabled Tab',
disabled:true,
html: "Can't see me cause I'm disabled"
}
]
});
autoLoad:异步载入的页面。