antd的tabs 切换

         <Tabs defaultActiveKey={this.state.num} activeKey={this.state.numMo} onChange={this.callback.bind(this)}  >
              <TabPane tab="Tab 1" key="a1"> Content of Tab Pane 1</TabPane>
              <TabPane tab="Tab 2" key="2">Content of Tab Pane 2 </TabPane>
              <TabPane tab="Tab 3" key="3">Content of Tab Pane 3</TabPane>
         </Tabs>
    <button onClick={this.tabChange.bind(this)}>  点击切换</button>

    tabChange() {
        // 点击切换当前的tabs
        this.setState( {numMo: '3'})
    }
    //   当tab切换的时候触发
    callback(val) {
        this.setState( {  numMo: val })
    }