UPDATE

src/App.vue

@@ -9,7 +9,7 @@
     <Goods v-for="item in list" :key="item.id" :title="item.goods_name" :pic="item.goods_img" :chstate="item.goods_state"
       :id="item.id" :price="item.goods_price" :count="item.goods_count" @good_check_change="updateGoodState"></Goods>
 
-    <Footer :full_checked="allChecked" :amount="amt" @changAllGoodsState="changeState"></Footer>
+    <Footer :full_checked="allChecked" :amount="amt" @changAllGoodsState="changeState" ref="FooterRef"></Footer>
     
   </div>
 </template>
@@ -19,7 +19,7 @@ import axios from 'axios' // 导入 axios 模块
 import Header from '@/components/Header/Header.vue' // 导入 Header 组件
 import Goods from '@/components/Goods/Goods.vue' // 导入 Goods 组件
 import Footer from '@/components/Footer/Footer.vue'
-import { EventBus  } from './components/eventBus.js'
+
 
 export default {
   components: {

src/components/Counter/Counter.vue

@@ -11,7 +11,8 @@
 
 <script>
 
-import bus from '../eventBus.js';
+import bus from '../eventBus' ;
+
 export default {
   
   
@@ -27,7 +28,7 @@ export default {
   },
   methods:{
     add(){
-    
+      
     }
   },
 }

src/components/Footer/Footer.vue

@@ -18,7 +18,7 @@
 </template>
 
 <script>
-import bus from '../eventBus';
+
 export default {
   props:{
     full_checked:{
@@ -33,7 +33,8 @@ export default {
   methods:{
     changAppListGoodsSState(e){
      this.$emit('changAllGoodsState',{value: e.target.checked})
-    }
+    },
+
   }
 }
 </script>

src/components/Goods/Goods.vue

@@ -19,7 +19,7 @@
       <div class="goods-info-bottom">
         <!-- 商品价格 -->
         <span class="goods-price">￥{{price}}</span>
-        <Counter :num="count" :count_id="id"></Counter>
+        <Counter :num="count" :count_id="id" ></Counter>
       </div>
     </div>
   </div>

src/components/eventBus.js

-export function helloWorld() {
-    console.log("Hello, World!");
-  }
\ No newline at end of file
+
+import { createApp } from 'vue';
+
+export default createApp({});
+