abstract：<html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=
<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>
<script src="js/Vue.js"></script>
</head>
<body>
<div id="box">
<input type="text" v-model="fristNum" />
+
<input type="text" v-model="lastNum" />
=
{{ result }}
</div>
<script>
var changenum = new Vue({//创建
el: "#box",//绑定
data: {//设置初始值
fristNum: "",
lastNum: ""
},
computed: {
result: function() {
return Number(this.fristNum) + Number(this.lastNum);//返回加法结果
}
}
});
</script>
</body>
</html>
Correcting teacher：天蓬老师Correction time：2019-03-25 09:21:26
Teacher's summary：很好, 还是数据类型进行约束, 其实vue.js中的专门的方法来处理这个类型的, 看一下手册