Update 06 侦听器.md

hzz4j · Nov 28, 2021 · 2816a78 · 2816a78
1 parent 6676ad7
commit 2816a78
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/vue3/06 侦听器.md b/docs/vue3/06 侦听器.md
@@ -20,6 +20,7 @@ watch: {
     // 侦听price，当它发生变化时
     price(newValue,preValue){
         // ...
+        alert(`price原来是${preValue}现在变成${newValue}`);
     }
 }
 ```
@@ -36,7 +37,6 @@ watch: {
 
 <script>
 import {ref} from 'vue';
-
 export default {
     setup(){
         return {