021:尚硅谷watch监控情况5学习示例

src/components/Person.vue

@@ -1,6 +1,6 @@
 <template>
 <div class="person">
-<h1>情况4示例</h1>
+<h1>情况5示例</h1>
 <h2>姓名：{{ person.name }}</h2>
 <h2>年龄：{{ person.age }}</h2>
 <h2>汽车：{{ person.car.c1 }}---{{ person.car.c2 }} </h2>
@@ -49,10 +49,10 @@
             c2: '法拉利'
         }
     }
-    watch(()=>person.age, (newValue, oldValue) => {
-        console.log('person changed:', newValue, oldValue)
-    })
-    watch(()=>person.car, (newValue, oldValue) => {
+    // watch(()=>person.age, (newValue, oldValue) => {
+    //     console.log('person changed:', newValue, oldValue)
+    // })
+    watch([person.car,()=>person.name], (newValue, oldValue) => {
         console.log('汽车变化了:', newValue, oldValue)
     },{deep:true})