<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>tushu</title>
<style>
.active{
color: red;
}
table{
border: 1px solid #e9e9e9;
border-collapse: collapse;
border-spacing: 0;
}
th,td{
padding: 8px 16px;
border: 1px solid #e9e9e9;
text-align: center;
}
th{
background-color: #f7f7f7;
color: #5c6b77;
font-weight: 600;
}
</style>
</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>{{item.id}}</td>
<td>{{item.name}}</td>
<td>{{item.date}}</td>
<td>{{item.price | shownd}}</td>
<td>
<button :disabled="item.count <= 1" @click="decream(index)">-</button>
{{item.count}}
<button @click="incream(index)">+</button>
</td>
<td><button @click="redis(index)">移除</button></td>
</tr>
</tbody>
</table>
<h2>總價格：{{zprice | shownd}}</h2>
</div>
<h1 v-else>購物車爲空</h1>
</div>
<script src="../vue.js"></script>
<script src="./main.js"></script>
</body>
</html>
main.js代碼：
const app = new Vue({
el:'#app',
data:{
books:[
{
id: 1,
name: '《算法導論》',
date: '2006-6',
price: 85.00,
count: 1
},
{
id: 2,
name: '《編程藝術》',
date: '2006-5',
price: 59.00,
count: 1
},
{
id: 3,
name: '《編程珠璣》',
date: '2008-10',
price: 39.00,
count: 1
},
{
id: 4,
name: '《代碼大全》',
date: '2006-3',
price: 128.00,
count: 1
}
]
},
methods:{
incream(index){
this.books[index].count++
},
decream(index){
this.books[index].count--
},
redis(index){
this.books.splice(index,1)
}
},
computed:{
zprice(){
let st = 0
for(let i=0; i<this.books.length;i++){
st += this.books[i].price * this.books[i].count
}
return st
}
},
filters:{
shownd(price){
return '￥' + price.toFixed(2)
}
}
})
