文章目录
书籍购物车案例
我们来做一个阶段性的案例，巩固之前学习的知识。案例的效果图如下：
效果图
项目目录
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>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.date}}</td>
<td>{{item.price | showPrice}}</td>
<td>
<button @click="decrement(index)" :disabled="item.count <= 1">-</button>
{{item.count}}
<button @click="increment(index)">+</button>
</td>
<td><button @click="removeHandle(index)">移除</button></td>
</tr>
</tbody>
</table>
<h2>总价格:{{totalPrice | showPrice}}</h2>
</div>
<h2 v-else>购物车为空</h2>
</div>
<script src="../js/vue.js"></script>
<script src="main.js"></script>
</body>
</html>
main.js
const app = new Vue({
el: '#app',
data: {
books: [
{
id: 1,
name: '《算法导论》',
date: '2006-9',
price: 85.00,
count:1
},
{
id: 2,
name: '《UNIX编程艺术》',
date: '2006-2',
price: 59.00,
count:1
},
{
id: 3,
name: '《编程珠玑》',
date: '2008-10',
price: 39.00,
count:1
},
{
id: 4,
name: '《代码大全》',
date: '2006-3',
price: 128.00,
count:1
},
]
},
filters: {
showPrice(price) {
return '￥' + price.toFixed(2);
}
},
methods: {
increment(index) {
this.books[index].count++;
},
decrement(index) {
this.books[index].count--;
},
removeHandle(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;
}
}
})
style.css
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;
}
其中补充了简单的过滤器的知识。
最终效果展示
回顾
Vue笔记一——Vue安装与体验
Vue笔记二——Vue声明周期与模板语法
Vue笔记三——计算属性(computed)
Vue笔记四——事件监听的使用
Vue笔记五——条件判断与循环遍历