feat：性能优化

components/shop/parity-product-item.vue

@@ -1,5 +1,5 @@
 <template>
-  <view class="ping-item" @click.stop="onClick">
+  <view class="parity-product-item" @click.stop="onClick">
     <image class="top-img" :src="obj.url" mode="widthFix" lazy-load />
     <view class="shop-bottom-panel">
       <text class="title text-30 text-zu text-overflow">
@@ -24,7 +24,7 @@
 
 <script>
 export default {
-  name: 'PingItem',
+  name: 'ParityProductItem',
   props: {
     obj: {
       type: Object,
@@ -47,7 +47,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-.ping-item {
+.parity-product-item {
   width: 332rpx;
   background: #fff;
   border-radius: 12rpx;

components/shop/points-product-item.vue

@@ -1,7 +1,7 @@
 <template>
 	<view class="shop-view" @click="onClick">
 		<view class="shop-left-view">
-			<image :src="obj.url"></image>
+			<image :src="obj.url" lazy-load></image>
 		</view>
 		<view class="shop-right-view">
 			<view class="right-top-view text-overflow1">

components/shop/preferred-product-item.vue

@@ -1,7 +1,7 @@
 <template>
 	<view class="shop-view" @click="onClick">
 		<view class="shop-left-view">
-			<image :src="obj.url"></image>
+			<image :src="obj.url" lazy-load></image>
 		</view>
 		<view class="shop-right-view">
 			<view class="shop-top-img">