获取单选按钮组的选中值

 1 var radioGroup = new Ext.form.RadioGroup({
 2          130,
 3         id: 'selected',
 4         layout: 'form',
 5         items: [{
 6             name: 'orders',
 7             inputValue: '0',
 8             boxLabel: '订单统计',
 9             checked: true
10         }, {
11             name: 'orders',
12             inputValue: '1',
13             boxLabel: '公司统计'
14         }, {
15             name: 'orders',
16             inputValue: '2',
17             boxLabel: '员工统计'
18         }],
19         listeners : {
20             'change': function() {
21                 //这里可以显示单选按钮的选中值
22                 console.dir(Ext.getCmp('selected').lastValue.orders);
23             }
24         }
25     });