data: {
   status: 0,
  },

handtab(e) {
    console.log(e);
    let index = e.currentTarget.dataset.index
    console.log(index);
    this.setData({
      currentIndex: index,
      status: e.currentTarget.dataset.index
      //在點擊切換時利用status來切換根據(jù)index下標來實現(xiàn)
    })
  },

<view>
  <block wx:for="{{data}}" wx-key="index" class="list_top">
    <view data-index="{{index}}" class="list_one {{index==currentIndex?'active':''}}" bindtap="handtab">{{item.name}}
    </view>
  </block>
  <block wx:for="{{shopList}}" wx:key="index">
    <view class="shopList_box" bindtap="handDetail" data-id="{{item.goods_id}}" wx:if="{{status==0}}">
    //在wxml中使用wx:if status == 0來改變tab切換下面的部分顯示與隱藏
      <view class="shopList_left">
        <image src="{{item.goods_big_logo}}"></image>
      </view>
      <view class="shopList_right"> <text class="right">{{item.goods_name}}</text>
        <text class="price">￥{{item.goods_price}}</text>
      </view>
    </view>
  </block>
  <block>
  //status==1的情況
    <view wx:if="{{status==1}}">2</view>
  </block>
  <block>
   //status==2的情況
    <view wx:if="{{status==2}}">3</view>
  </block>
</view>