index.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>购物车示例</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div id="app" v-cloak>
<template v-if="list.length">
<thead>
<tr>
<th></th>
<th>商品名称</th>
<th>购买单价</th>
<th>购买数量</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<tr v-for="(item, index) in list">
<td>{{ index + 1 }}</td>
<td>{{ item.name }}</td>
<td>{{ item.price }}</td>
<td>
<button
@click="handleReduce(index)"
:disabled="item.count === 1">-</button>
{{ item.count }}
<button @click="handleAdd(index)">+</button>
</td>
<td>
<button @click="handleReduce(index)">移除</button>
</td>
</tr>
</tbody>
<div>总价: $ {{ totalPrice }}</div>
</template>
<div v-else>购物车为空</div>
</div>
<script src="https://unpkg.com/vue/dist/vue.min.js"></script>
<script src="index.js"></script>
</body>
</html>
index.js:
var app = new Vue ({
el: '#app',
data: {
list: [
{
id: 1,
name: 'iPhone x',
price: 6799,
count: 1
},
{
id: 2,
name: 'iPad Pro',
price: 9999,
count: 1
},
{
id: 3,
name: 'MacBkko Pro',
price: 25999,
count: 1
}
],
a: 5
},
computed: {
totalPrice: function () {
var total = 0;
for (var i = 0; i < this.list.length; i++) {
var item = this.list[i];
total += item.price * item.count;
}
return total.toString().replace(/\B(?=(\d{3})+$)/g,',');
}
},
methods: {
handleReduce: function (index) {
if (this.list[index].count === 1) return;
this.list[index].count--;
},
handleAdd: function (index) {
this.list[index].count++;
},
handleRemove: function () {
this.list.splice(index, 1);
}
}
})
style.css:
[v-cloak] {
disPlay: none;
}
table {
border: 1px solid #e9e9e9;
border-collapse: collapse;
border-spacing: 0;
empty-cells: show;
}
th,td {
padding: 8px 16px;
border: 1px solid #e9e9e9;
text-align: left;
}
th {
background: #f7f7f7;
color: #5c6b77;
font-weight: 600;
white-space: nowrap;
}
