diff --git a/src/App.vue b/src/App.vue
index 633a5dfe4e547c48bfa93740a290ba5ba370930a..062c0a301dafac56da7366d174999e1a58286489 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,47 +1,33 @@
-<script setup>
-import HelloWorld from './components/HelloWorld.vue'
-import TheWelcome from './components/TheWelcome.vue'
-</script>
-
 <template>
-  <header>
-    <img alt="Vue logo" class="logo" src="./assets/logo.svg" width="125" height="125" />
-
-    <div class="wrapper">
-      <HelloWorld msg="You did it!" />
+  <div>
+    <button @click="add">Increment</button>
+    <div>
+      {{ count }}
     </div>
-  </header>
-
-  <main>
-    <TheWelcome />
-  </main>
+   <HelloWorld></HelloWorld>
+  </div>
 </template>
-
-<style scoped>
-header {
-  line-height: 1.5;
+<script>
+import HelloWorld from './components/HelloWorld.vue';
+
+
+
+export default{
+    data() {
+        return {
+            count: 0
+        };
+    },
+    methods: {
+        add() {
+            this.count++;
+        }
+    },
+    mounted() {
+        console.log(this.count);
+        console.log("vue要开始学习了哦");
+    },
+    components: { HelloWorld }
 }
+</script> 
 
-.logo {
-  display: block;
-  margin: 0 auto 2rem;
-}
-
-@media (min-width: 1024px) {
-  header {
-    display: flex;
-    place-items: center;
-    padding-right: calc(var(--section-gap) / 2);
-  }
-
-  .logo {
-    margin: 0 2rem 0 0;
-  }
-
-  header .wrapper {
-    display: flex;
-    place-items: flex-start;
-    flex-wrap: wrap;
-  }
-}
-</style>
diff --git a/src/main.js b/src/main.js
index 90e6400b4d8ad8aba0c1caa53874eb4b81380648..4092163835cfca036b510f30cd905e52cb71d660 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,6 +1,10 @@
 import { createApp } from 'vue'
 import App from './App.vue'
+import HelloWorld from './components/HelloWorld.vue'
 
-import './assets/main.css'
-
-createApp(App).mount('#app')
+let app=createApp(App)
+app.mount('#app')
+app.config.errorHandler=(err)=>{
+    console.log("你是出现了错误");
+}
+app.component('HelloWorld',HelloWorld)
\ No newline at end of file