购物车案例
html部分代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>书籍购物车案例</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="app">
<div v-if="books.length">
<table>
<thead>
<tr>
<th></th>
<th>书籍名称</th>
<th>出版日期</th>
<th>价格</th>
<th>购买数量</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.productDate}}</td>
<!-- 使用过滤器-->
<td>{
{item.price | showPrice }}</td>
<td>
<button @click="decrement(index)" :disabled="item.number<= 1">-</button>
{
{item.number}}
<button @click="increment(index)">+</button>
</td>
<td>
<button @click="removeBook(index)">移除</button>
</td>
</tr>
</tbody>
</table>
<h2>总价格: {
{totalPrice | showPrice}}</h2>
</div>
<div v-else>
<h2>购物车为空</h2>
</div>
</div>
</body>
<script src="../js/vue.js"></script>
<script src="main.js"></script>
</html>
main.js部分代码：
const app = new Vue({
el: '#app',
data: {
books: [
{
id: 1, name: 'unix', productDate: '2006-9', price: 102, number: 1},
{
id: 2, name: 'linux', productDate: '2008-9', price: 152, number: 1},
{
id: 3, name: 'javaScript', productDate: '2011-9', price: 52, number: 1},
{
id: 4, name: 'java', productDate: '2001-9', price: 78, number: 1},
{
id: 5, name: 'c++', productDate: '2002-9', price: 62, number: 1},
]
},
methods: {
getTotalPrice: function (price) {
return '￥' + price.toFixed(2)
},
decrement: function (index) {
this.books[index].number--
},
increment: function (index) {
this.books[index].number++
},
removeBook: function (index) {
this.books.splice(index, 1)
}
},
// 过滤器
filters: {
showPrice(price) {
return '￥' + price.toFixed(2)
}
},
computed: {
totalPrice() {
let totalPrice = 0
for (const book of this.books) {
console.log(book)
totalPrice += book.number * book.price
}
return totalPrice
}
}
})
style.css部分代码：
table {
border: 1px solid #e9e9e9;
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;
}