<view class='pz'  wx:for="{{pz}}" wx:for-index='xb' wx:for-item='value' > <image src='../../images/{{value.img}}.jpg'></image> {{value.name}} {{value._id}} <!--商品数量减少 --> <view  class="{{open?'display_showv':'display_none'}}" bindtap='subtract' data-img='{{value.img}}' data-amount='{{amount}}' data-price='{{value.price}}' data-name='{{value.name}}'> - </view> <text class='bb'>你好</text> <!--商品数量增加 --> <view bindtap='add' id='aa' data-amount='{{amount}}' data-price='{{value.price}}' data-name='{{value.name}}' data-img='{{value.img}}'> + </view> </view> wx.createSelectorQuery().select('.bb') 用这个不行