<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>reduce专场</title>
<style>
table {
border: 1px solid #000;
text-align: center;
width: 240px;
}
th,td {
border: 1px solid #000;
}
h3 {
position: relative;
}
</style>
</head>
<body>
<div id="app">
<h3>ZY的礼物清单</h3>
<table>
<tr>
<th>名字</th>
<th>数量</th>
</tr>
<tr v-for="(item, index) in list" :key="item.id">
<td>{
{ item.name }}</td>
<td>{
{ item.num }}个</td>
</tr>
</table>
<!-- 目标：统计求和，求得礼物总数 -->
<p>礼物总数：{
{totalSum}} 个</p>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
const app = new Vue({
el: '#app',
data: {
// 现有的数据
list: [
{ id: 1, name: '篮球', num: 1 },
{ id: 2, name: '玩具', num: 2 },
{ id: 3, name: '铅笔', num: 5 },
]
},
computed: {
/* 计算属性名 */
totalSum () {
let total = this.list.reduce((sum, item) => sum + item.num, 0)
return total
}
}
})
</script>
</body>
</html>reducción del atributo calculado de vue
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Origin blog.csdn.net/m0_62600503/article/details/132509671
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