Vue學習筆記（二）——購物車案例
文章目錄
- Vue學習筆記（二）——購物車案例
-
- 一、購物車案例
-
- 1.結果展示
- 二、源碼
一、購物車案例
用到了比較多的Vue的基礎知識：包括計算屬性，插值運算等等， 是一個比較好的例子。
1.結果展示
二、源碼
index.html源碼
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<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 v-for="value in item">{{value}}</td>-->
<td>{{item.id}}</td>
<td>{{item.name}}</td>
<td>{{item.date}}</td>
<!--<td>{{getFinalPrice(item.price)}}</td>-->
<td>{{item.price | showFinalPrice}}</td>
<td>
<button @click="decrement(index)" :disabled="item.count <= 1">-</button>
{{item.count}}
<button @click="increment(index)">+</button>
</td>
<td>
<button @click="remove(index)">移除</button>
</td>
</tr>
</tbody>
</table>
<h2>總價格：{{totalPrice | showFinalPrice}}</h2>
</div>
<h2 v-else>購物車為空</h2>
</div>
<script src="../../js/vue.js"></script>
<script src="main.js"></script>
</body>
</html>
style.css 源碼
table {
border:1px solid black;
border-collapse: collapse;
border-spacing: 0;
}
th, td {
padding: 8px 16px;
border: 1px solid #e9e9e9;
text-align: left;
}
th {
background-color: #f7f7f7;
color: #5c6b77;
font-weight: 600;
}
main.js代碼
const app = new Vue({
el: '#app',
data: {
books:[
{
id: 1,
name: '《算法導論》',
date: '2006-9',
price: 85.00,
count: 1
},
{
id: 2,
name: '《UNIX程式設計藝術》',
date: '2006-2',
price: 59.00,
count: 1
},
{
id: 3,
name: '《程式設計珠玑》',
date: '2008-10',
price: 39.00,
count: 1
},
{
id: 4,
name: '《代碼大全》',
date: '2006-3',
price: 128.00,
count: 1
},
]
},
methods: {
getFinalPrice (price) {
return '￥'+price.toFixed(2);
},
decrement (index) {
return this.books[index].count--;
},
increment (index) {
return this.books[index].count++;
},
remove(index) {
this.books.splice(index,1);
},
},
computed: {
totalPrice() {
let totalPrice =0;
for(let i = 0; i < this.books.length; i++){
totalPrice += this.books[i].price * this.books[i].count;
}
return totalPrice;
},
},
filters: {
showFinalPrice (price) {
return '￥'+price.toFixed(2);
}
}
})