ext中tabpanel选项卡的切换效果(显示与隐藏)

var myTabs = new Ext.TabPanel({
    id:'myTabs',
    region:'center',
      margins:'3 3 3 0',
            activeTab: 0,
            border: false,
      defaults:{autoScroll:true},
            items:[
                {layout: 'fit', index: 0, border: false,id:"customerInfoTab", items: [a], title: "第一个"},
                {layout: 'fit', index: 1, border: false,id:"haveCarTab", items: [b], title: "第二个"}
            ]
        });

myTabs .hideTabStripItem(2);       //隐藏

myTabs .unhideTabStripItem(2);      //显示

var tabs = new Ext.TabPanel({ 
    activeTab : 0,
    frame : false,
    items : [tab1, tab2]
    });
    
    // 某处你需要隐藏tab1，显示tab2
    
    tabs.tabBar.items.items[0].hide();
    
    // 某处你又需要显示tab1
    
    tabs.tabBar.items.items[0].show();