ml: <view class="identity" style="width:350rpx;">         <label class="identity_title">民族：</label>         <view class="wei-input">           <view class="selected" bindtap='mySelect'>           <text style="font-size:26rpx;">{{groups_name}}</text>           <image src='/pages/images/xiala_1.png'></image> </view>         </view>          <!-- 下拉需要显示的列表 -->         <view class="select_box" wx:if="{{select}}">           <view wx:for="{{groups}}" wx:key="value" >             <view class="select_one" bindtap="getNation" data-id="{{item.id}}" data-name="{{item.name}}">{{item.name}}</view>           </view>         </view>       </view> [图片] js: [图片] [图片] [图片] 通过radio单选，先拿到选择的id，可得到的是数组，求大佬们解答，帮我拿到id?(谢谢)