Vue实现一个本地购物车的示例
Vue实现一个本地购物车的示例
功能分析 : v-for显示商品名字,价格,数量和对商品进行操作,全选的功能
结构仍然分成 : index.html , index.js , style.css
index.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>购物车实例title>
<link rel="stylesheet" href="style.css">
head>
<body>
<div id="app" v-cloak>
<template v-if="list.length">
<table>
<thead>
<tr>
<th><input type="checkbox" @click='checkAll' :checked='allCheck'>th>
<th>序号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>
<tr v-for="(item,index) in list">
<td><input type="checkbox" :checked='item.isChecked' @click="singleCheck(index)">td>
<td>{{index + 1}}td>
<td>{{item.name}}td>
<td>{{item.price}}td>
<td>
<button @click="handleReduce(index)" :disable="item.count === 1 ">-button>
{{item.count}}
<button @click="handleAdd(index)">+button>
td>
<td>
<button @click="handleRemove">移除button>
td>
tr>
tbody>
table>
<div>总价 : ¥{{totalPrice}}div>
template>
<div v-else>购物车为空div>
div>
body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js">script>
<script src="index.js">script>
html>
index.js
const app = new Vue({
el : '#app',
data : {
allCheck:false,
list : [
{
id: 1 ,
name :'iPhone 8 ',
price: 6188 ,
count: 1 ,
isChecked : false
},
{
id: 2 ,
name :'小米 8 ',
price: 5888 ,
count: 1 ,
isChecked : false
},
{
id: 3 ,
name :'iPad Pro ',
price: 11000 ,
count: 1 ,
isChecked : false
},
{
id: 4 ,
name :'雷神SE9',
price: 6188 ,
count: 10 ,
isChecked : false
},
]
},
computed : {
//通过计算属性获取总价格
totalPrice:function() {
let total = 0;
const newArr = this.list.filter(value => {
return value.isChecked == true
})
for(var i = 0 ;i<newArr.length;i++) {
total += this.list[i].price * this.list[i].count
}
//返回一个符合千分位格式的金额数
//return total.toString().replace(/\B(?=(\d{3})+$)/g,',')
return total
}
},
methods : {
//减法
handleReduce:function(index) {
if(this.list[index].count === 1) return ;
this.list[index].count--;
},
//加法
handleAdd:function(index) {
this.list[index].count++
},
//移除
handleRemove:function(index) {
this.list.splice(index,1)
},
//全选
checkAll() {
this.allCheck = !this.allCheck
this.list.forEach(value => {
value.isChecked = this.allCheck
})
},
//单选,当全部选中时,改变全选按钮的状态
singleCheck(index) {
this.list[index].isChecked = !this.list[index].isChecked
const selectData = this.list.filter(value => {
return value.isChecked == true
})
this.allCheck = selectData.length === this.list.length ? true : false
}
}
})
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: yellowgreen;
color: #5c6b77;
font-weight: 600;
white-space: nowrap;
}
效果图如下
