代碼下載地址：https://github.com/MengFangui/VueShoppingCart
1、index.html
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>購物車示例</title>
<link rel="stylesheet" type="text/css" href="css/style.css"/>
</head>
<body>
<div id="app" v-cloak>
<template v-if="list.length">
<table>
<thead>
<tr>
<th></th>
<th>商品名稱</th>
<th>商品單價</th>
<th>購買數量</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<!--注意v-for有可選參數鍵名和索引(value,key,index)-->
<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="handleRemove(index)">移除</button>
</td>
</tr>
</tbody>
</table>
<div>總價：¥{{totalPrice}}</div>
</template>
<div v-else> 購物車為空 </div>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script src="js/index.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>
2、index.js
var app = new Vue({ el: '#app', data: { list: [{ id: 1, name: 'iphone 7', price: 6188, count: 1 }, { id: 2, name: 'iphone 8', price: 7188, count: 1 }, { id: 3, name: 'iphone X', price: 8188, count: 1 }, ] }, methods: { handleReduce: function(index) { if(this.list[index].count === 1) return; this.list[index].count--; }, handleAdd: function(index) { this.list[index].count++; }, handleRemove: function(index) { this.list.splice(index, 1); } }, computed: { totalPrice: function() { var total = 0; for(var i = 0, len = this.list.length; i < len; i++) { total += this.list[i].price * this.list[i].count; } //每隔三位加一個逗號
return total.toString().replace(/\B(?=(\d{3})+$)/g, ','); } } })
3、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;
}
4、效果
