<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<h3>
{{user.name}},{{user.age}},{{user.phone}}
<button @click='handlerAdd'>添加属性</button>
</h3>
</div>
<script src="./vue.js"></script>
<script>
// Vue不能检测对象属性的添加和删除
new Vue({
el:"#app",
data:{
user:{}
},
methods: {
handlerAdd() {
// Vue.$set(object,key,value)添加响应式属性
// this.user.age = 20;
// this.$set(this.user,'age',20);
// 添加多个响应式属性
this.user = Object.assign({},this.user,{
age:20,
phone:98564123
})
}
},
created(){
setTimeout(() => {
this.user = {
name:"张三"
}
}, 1250);
}
})
</script>
</body>
</html>