两个整数相加
<html>
<head>
<meta charset="utf-8">
<title>侦听器</title>
<script type="text/javascript" src="vue.js"></script>
</head>
<body>
<div id="box">
请输入数字1 <input type="text" v-model="num1">
请输入数字2 <input type="text" v-model="num2">
<h2>两数相加结果为：{{sum}}</h2>
</div>
<script type="text/javascript">
new Vue({
el:"#box",
data:{
num1:"",
num2:""
},
computed:{
sum:function(){
return parseInt(this.num1)+parseInt(this.num2);
}
}
})
</script>
</body>
</html>