【Vue.js】计算属性和侦听器(五)
2018-08-28 本文已影响0人
kingloongMagic
一、computed:计算属性,根据函数计算值
二、watch:监听属性,监控值改变,改变后执行函数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Vue学习</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:{
fullName: function () {
return this.firstName + " " + this.lastName
},},
watch:{
fullName:function () {
this.count++
}
}
})
</script>
</body>
</html>