文件修改

src/App.vue

@@ -1,16 +1,18 @@
 <template>
   <div id="appMain">
-    <HelloWorld msg="Welcome to Your Vue.js App"/>
+    <router-view>
+
+    </router-view>
   </div>
 </template>
 
 <script>
-import HelloWorld from './components/HelloWorld.vue'
+
 
 export default {
   name: 'App',
   components: {
-    HelloWorld
+
   }
 }
 </script>