hello uts 兼容 vue2语法

main.js

 import App from './App'
 
+// #ifndef VUE3
+import Vue from 'vue'
+Vue.config.productionTip = false
+App.mpType = 'app'
+const app = new Vue({
+  ...App
+})
+app.$mount()
+// #endif
+
+// #ifdef VUE3
 import { createSSRApp } from 'vue'
 export function createApp() {
   const app = createSSRApp(App)
-
   return {
     app
   }
 }
+// #endif

pages/SyntaxCase/consoleTest.vue

 <template>
+  <div>
     <button @click="logStr">打印字符串</button>
     <button @click="logFloat">打印浮点数</button>
     <button @click="logInt">打印整数</button>
@@ -7,6 +8,7 @@
     <button @click="logFile">打印文件</button>
     <button @click="logDate">打印日期</button>
     <button @click="logDateCombine">组合打印日期</button>
+  </div>
 </template>
 
 <script>

pages/SyntaxCase/instanceTest.vue

 <template>
+  <div>
     {{ret}}
     <button @click="instanceCreate">多实例创建测试</button>
+  </div>
 	
 </template>
 

pages/SyntaxCase/paramTest.vue

 <template>
+  <div>
     <button @click="inputArrayTest">传入数组参数</button>
     <button @click="inputParamTest">传入复杂对象参数</button>
     <button @click="returnArrayTest">返回数组参数</button>
     <button @click="returnParamTest">返回复杂对象参数</button>
     <button @click="callbackArrayTest">异步返回数组</button>
     <button @click="callbackParamTest">异步返回复杂对象</button>
+  </div>
 </template>
 
 <script>