小程序列表渲染wx:for中自定义index,item

<view wx:for="{{duoda}}" wx:key="{{index}}" class='duo'> 第{{index+1}}题答案：{{item[index+1]}} <view class='analysis' wx:for="{{duojx}}" wx:key="{{index}}" wx:for-index="in" wx:for-item="items" wx:if="{{index==in}}">解析：{{items[index+1]}}</view>