代码下载地址：https://github.com/MengFangui/VueShoppingCart
1、index.html
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>购物车示例</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>商品名称</th>
<th>商品单价</th>
<th>购买数量</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<!--注意v-for有可选参数键名和索引(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>总价：¥{{totalPrice}}</div>
</template>
<div v-else>
购物车为空
</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;
}
//每隔三位加一个逗号
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
