<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<table border="1">
<thead>
<th>学科</th>
<th>分数</th>
</thead>
<tbody>
<tr>
<td>数学</td>
<td><input type="text" v-model.number="math"></td>
</tr>
<tr>
<td>语文</td>
<td><input type="text" v-model.number="chinese"></td>
</tr>
<tr>
<td>英语</td>
<td><input type="text" v-model.number="english"></td>
</tr>
<tr>
<td>总分</td>
<td>{{sum}}</td>
</tr>
<tr>
<td>平均分</td>
<td>{{average}}</td>
</tr>
</tbody>
</table>
</div>
<script src="https://cdn.bootcss.com/vue/2.4.2/vue.js"></script>
<script>
var app=new Vue({
el:"#app",
data:{
math:80,
chinese:80,
english:100
},
computed:{
sum:function () {
return this.math + this.chinese + this.english
},
average:function () {
return Math.round(this.sum / 3)
}
}
})
</script>
</body>
</html>