flat: 性能优化，animation 等\preload等

pages/index/components/index-one.vue

@@ -66,7 +66,7 @@
         </view>
         <view class="table-list">
             <scroll-view :scroll-y="true" class="falls-scroll" @scroll="handleScroll" @scrolltolower="scrollBottom">
-                <view class="falls" v-if="list.length">
+                <view class="falls">
                     <custom-waterfalls-flow
                         :column="columnCount"
                         :columnSpace="columnSpace"
@@ -142,7 +142,7 @@
                     </custom-waterfalls-flow>
                     <loadmore ref="loadmoreRef"></loadmore>
                 </view>
-                <empty v-else></empty>
+                <empty v-if="!list.length"></empty>
             </scroll-view>
         </view>
         <!-- 筛选 -->