Html
<!DOCTYPE html>
<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>
<link rel="stylesheet" href="./main.css">
</head>
<div id="app">
<div v-if="books.length">
<table>
<thead>
<tr>
<th></th>
<th>書籍名稱</th>
<th>出版日期</th>
<th>價格</th>
<th>購買數量</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr v-for="(item,index) in books">
<td>{{item.id}}</td>
<td>{{item.name}}</td>
<td>{{item.data}}</td>
<!-- <td>{{getFinalPrice(item.price)}}</td> -->
<td>{{item.price| showPrice}}</td>
<td>
<button @click="inc(index)" :disabled="item.count <=1 ">-</button>
{{item.count}}
<button @click="add(index)">+</button>
</td>
<td><button @click="removeHandle(index)">移除</button></td>
</tr>
</tbody>
</table>
<h2>總價格:{{totalPrice|showPrice}}</h2>
</div>
<h2 v-else>購物車為空</h2>
</div>
<body>
<script src="../js/vue.js"></script>
<script src="./main.js"></script>
</body>
</html>
CSS
table{
border:1px solid #000;
border-collapse: collapse;
border-spacing: 0;
}
th,td{
padding: 8px 16px;
border:1px solid #000;
text-align:left;
}
th{
background-color: #f7f7f7;
color:#5c6b77;
font-weight:600px;
}
JavaScript
const app = new Vue({
el: '#app',
data: () => ({
books: [
{
id: 1,
name: '《算法導論》',
data: "2018-09-25",
price: 89.00,
count: 1
},
{
id: 2,
name: '《UNIX程式設計藝術》',
data: "2018-09-25",
price: 89.00,
count: 1
},
{
id: 3,
name: '《程式設計珠玑》',
data: "2018-09-25",
price: 89.00,
count: 1
},
{
id: 4,
name: '《JavaScript進階算法》',
data: "2018-09-25",
price: 89.00,
count: 1
},
{
id: 5,
name: '《C++》',
data: "2018-09-25",
price: 89.00,
count: 1
}
],
}),
computed: {
totalPrice: function () {
// 1、
// let totalPrice = 0
// for (let i = 0; i < this.books.length; i++) {
// totalPrice +=this.books[i].price * this.books[i].count
// }
// return totalPrice
// 2、
// let totalPrice = 0;
// for (let i in this.books) {
// totalPrice += this.books[i].price * this.books[i].count
// }
// return totalPrice
// 3、
let totalPrice = 0
for (let item of this.books) {
totalPrice += item.price * item.count
}
return totalPrice
}
},
methods: {
// getFinalPrice: (price) => {
// return '￥' + price.toFixed(2)
// }
add: function (index) {
this.books[index].count++
},
inc: function (index) {
this.books[index].count--
},
removeHandle: function (index) {
this.books.splice(index, 1)
}
},
filters: {
showPrice: function (price) {
return '￥' + price.toFixed(2)
}
}
})
注：檔案檔案位置
