<view class="tab bg">
          <scroll-view class="" scroll-x="true" style="width: 100%;white-space: nowrap; display: flex;overflow-x: auto;">
              <view style="display: inline-block" bindtap="switchIndex" class="tab-list {{index === 1 ?'on':''}}">首頁</view>
              <view wx:for="{{tab}}" wx:key="index" data-id="{{item.id}}" data-index="{{index}}"
                 style="display: inline-block" bindtap="switchTab" class="tab-list {{tabIndex === index?'on':''}}">
                  {{item.nav_name}}
              </view>
          </scroll-view>
      </view>