咳咳,第一次寫部落格,有點小緊張,這次我将給大家帶來一個vue.js實作購物車的小項目,如有不足請嚴厲指出。
購物車功能有:全選和選擇部分商品,選中商品總價計算,商品移除,以及調整購買數量等功能。
js
主要有以下方法
加函數,減函數,手動修改數量判斷庫存函數,總價格計算函數,單選事件,全選事件,一共分為6個事件
具體效果如下圖
![](https://img.laitimes.com/img/9ZDMuAjOiMmIsIjOiQnIsICdzFWRoRXdvN1LclHdpZXYyd2LcBzNvwVZ2x2bzNXak9CX90TQNNkRrFlQKBTSvwFbslmZvwFMwQzLcVmepNHdu9mZvwFVywUNMZTY18CX052bm9CX9UFVNl3bzoldGdUY1ZlbhZXUYpVd1kmYr50MZV3YyI2cKJDT29GRjBjUIF2LcRHelR3LcJzLctmch1mclRXY39TM4QDNyEjM4ETMzEDM4EDMy8CX0Vmbu4GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.jpg)
代碼在這裡
main.js
'use strict'
var app = new Vue({
el: '#app',
data: {
list: [
{
id: 1,
name: 'iPhone 7',
price: 6188,
count: 1,
check: true,
},
{
id: 2,
name: 'iPad Pro',
price: 5888,
count: 1,
check: false,
},
{
id: 3,
name: 'MacBook Pro',
price: 21488,
count: 1,
check: true,
},
]
},
methods: {
remove: function (index) { //移除商品
this.list.splice(index, 1);
},
reduce: function (index) { //減少商品
this.list[index].count --;
},
add: function (index) { //增加商品
this.list[index].count ++;
},
selAll: function () { //商品全選
let isAll = document.querySelector('#all');
if (isAll.checked == true) {
this.list.forEach(function(item, index) {
item.check = true;
})
} else {
this.list.forEach(function(item, index) {
item.check = false;
})
}
}
},
computed: {
totalPrices: function () { //計算總價
let totalPrices = 0;
this.list.forEach(function (val, index) {
if (val.check == true)
totalPrices += parseFloat(val.price * val.count);
})
return totalPrices.toString().replace(/\B(?=(\d{3})+$)/g, ','); //每三位數中間加一個‘,’
}
}
})
index.html
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="main.css" target="_blank" rel="external nofollow" >
</head>
<body>
<div id="app" v-cloak>
<template v-if="list.length">
<table>
<thead>
<tr>
<th>全選<input id="all" @click="selAll" type="checkbox" checked></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>
<template v-for="(item, index) in list">
<tr>
<td>
<input type="checkbox" :checked="item.check" @click="item.check = !item.check">
</td>
<td>
{{ item.name }}
</td>
<td>
{{ item.price }}
</td>
<td>
<button @click="reduce(index)" :disabled="item.count == 1">-</button>
{{ item.count }}
<button @click="add(index)">+</button>
</td>
<td>
<button @click="remove(index)">移除</button>
</td>
</tr>
</template>
</tbody>
</table>
<div>總價: ¥ {{ totalPrices }}</div>
</template>
<template v-else>
購物車沒有商品
</template>
</div>
<script src="vue.js"></script>
<script src="main.js"></script>
</body>
</html>
main.css
[v-cloak] {
display: none;
}
#app {
width: 500px;
margin: 0 auto;
}
table {
width: 100%;
border: 1px solid #444;
border-collapse: collapse;
}
th, td {
padding: 8px 16px;
border: 1px solid #444;
text-align: left;
}
th {
background: #89abd3;
color: rgb(214, 224, 235);
font-weight: 600;
white-space: nowrap;
}