<radio-group class="radio-group" bindchange="radioChange">

    <label class="radio" wx:for='{{card}}' wx:key='' data-id='{{item.id}}'>

        <view class='select_list'>

            <view>

                <view class='popup_text1'>{{item.branch_name}}</view>

                <view class='popup_text2'>2小时内到账</view>

            </view>

            <radio value="{{item.branch_name}}" checked="checked" />

        </view>

    </label>

</radio-group>

请问这边 label 标签的data-id怎么获取，

在radioChange 事件里面打印出来没有找到这个参数，页面中data-id是有参数的