<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>计算属性和侦听器</title>
<script src="./vue.js"></script>
</head>
<body>
<div id="root">
姓:<input v-model="firstName"/>
名:<input v-model="lastName"/>
<div>{{fullName}}</div>
<div>{{count}}</div>
</div>
<script>
new Vue({
el:"#root",
data:{
firstName:'',
lastName:'',
count:0
},
computed:{ //计算属性:根据其他属性计算出的结果
fullName:function(){
return this.firstName+this.lastName;
}
},
watch:{ //监听某一个数据或者属性发生了变化
fullName:function(){
this.count++;
}
/* firstName:function(){
this.count++;
},
lastName:function(){
this.count++;
}*/
}
})
</script>
</body>
</html>
注：学习笔记内容来自：https://www.imooc.com/learn/980
官网：cn.vuejs.org