banner缺省图逻辑调整

pages/grid/grid.vue

@@ -9,10 +9,10 @@
 		<!-- banner -->
 		<unicloud-db ref="bannerdb" v-slot:default="{data, loading, error, options}" :collection="collection"
 			:field="field" @load="load">
-			<uni-swiper-dot class="uni-swiper-dot-box" @clickItem="clickItem" :info="bannerFormate(data)"
+			<uni-swiper-dot class="uni-swiper-dot-box" @clickItem="clickItem" :info="bannerFormate(data, loading)"
 				:current="current" :mode="mode" :dots-styles="dotsStyles" field="content">
 				<swiper class="swiper-box" @change="changeSwiper" :current="swiperDotIndex">
-					<swiper-item v-for="(item, index) in bannerFormate(data)" :key="item._id">
+					<swiper-item v-for="(item, index) in bannerFormate(data, loading)" :key="item._id">
 						<view :draggable="false" class="swiper-item" @click="clickBannerItem(item)">
 							<image class="swiper-image" :src="item.bannerfile" mode="aspectFill" :draggable="false" />
 						</view>
@@ -119,7 +119,9 @@
 				current: 0,
 				mode: 'default',
 				dotsStyles: {},
-				swiperDotIndex: 0
+				swiperDotIndex: 0,
+				
+				isLoading:true
 			}
 		},
 		methods: {
@@ -181,7 +183,8 @@
 			/**
 			 * banner数据过滤
 			 */
-			bannerFormate(bannerList) {
+			bannerFormate(bannerList, loading) {
+				if (loading) return [];
 				if (bannerList.length > 0) return bannerList;
 				// 无数据添加默认值
 				let list = [{