<!-- 商品分类 -->
<scroll-view class="stair-nav" scroll-y>
    <view class="nowrap stair-nav-li {{categoryId == item.category_id ? 'active' : ''}}" bindtap="stairNav" wx:for="{{firstList}}" wx:key="firstList" data-index="{{index}}" data-id="{{item.category_id}}">
        {{item.title}}
    </view>
</scroll-view>

<scroll-view class="level-content" scroll-y>
    <view class="levelList-title">{{stairTitle}}</view>
    <view class="level-nav" wx:if="{{secondList.length > 0}}">
        <view class="level-nav-li" wx:for="{{secondList}}" wx:key="secondList" data-id="{{item.category_id}}" bindtap="jumpUrl">
            <view class="level-nav-cover">
                <image src="{{item.cover_url}}" mode="aspectFill"></image>
            </view>
            <view class="level-nav-title">{{item.title}}</view>
        </view>
    </view>
    <!-- <view class="level-tips" wx:else>
        暂无分类数据
    </view> -->
</scroll-view>