1、功能
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Vue总结数据监测</title>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>
<body>
<div id="root">
<hr/>
<h1 >学生信息</h1>
<button @click="student.age++">年龄+1岁</button>
<button @click="addsex">点击添加学生性别</button>
<button @click="student.sex='女'">点击修改学生性别</button>
<button @click="addFirstFriend">在列表首位添加一个朋友</button>
<button @click="updateFirstName">修改第一个朋友的名字为张三</button>
<button @click="addHobby">添加一个爱好</button>
<button @click="updateHobby">修改第一个爱好为:开车</button>
<h2>学生名字:{{student.name}}</h2>
<h2 v-if="student.sex">性别:{{student.sex}}</h2>
<h2>学生年龄:{{student.age}}</h2>
<hr/>
<h2>学生爱好</h2>
<ul>
<li v-for="p in student.hobby">{{p}}</li>
</ul>
<h2>学生朋友们</h2>
<h2>
<ul>
<li v-for="(p,index) in student.friends" :key="index"> {{p.name}}--{{p.age}}</li>
</ul>
</h2>
</div>
<script type="text/javascript">
Vue.config.productionTip=false;
const vm = new Vue({
el:"#root",
data:{
student:{
name: 'tom',
age:18,
hobby:[
'抽烟',
'喝酒',
'烫头'
],
friends:[
{name:'jeery',age:35},
{name:'tony',age:36}
]
}
},
methods:{
addsex(){
// Vue.set(this.student,'sex','男')
this.$set(this.student,'sex','男');
},
addFirstFriend(){
this.student.friends.unshift({name:'李四',age:36});
},
updateFirstName(){
this.student.friends[0].name="张三";
},
addHobby(){
this.student.hobby.unshift('抽烟');
},
updateHobby(){
this.student.hobby.splice(0,1,'开车');
// Vue.set(this.student.hobby,0,'开车');
// this.$set(this.student.hobby,0,'开车')
},
}
})
</script>
</body>
</html>
2、总结