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Ext.onReady(function(){
var panel = new Ext.Panel({
...
items:[{
title:'item1',
id:'_item1'
},{
title:'item2'
}{
title:'item3'
}{
title:'item4'
}{
title:'item5'
}],
buttons:[
{
text:'delete',
handler:function(){
panel.remove(Ext.getCmp('你要删除的panel的ID'));
if(panel.items.length===1){
this.disable();
}
if(panel.items.length>1){
this.enable();
}
panel.doLayout();
}
}
]
})
})