优化组件

components/pageWrap/index.js

@@ -1,5 +1,6 @@
 // components/page/index.js
 Component({
+    externalClasses: ['class'],
     /**
      * 组件的属性列表
      */

components/pageWrap/index.wxml

@@ -1,5 +1,5 @@
 <!--components/page/index.wxml-->
-<view>
+<view class="class">
 <slot></slot>
 <loading wx:if="{{showLoading}}"></loading>
 </view>