vue中怎么实现一个购物车插件，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
相关代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Hello MUI</title>
<meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1,user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="stylesheet" href="../../css/mui.min.css">
<link rel="stylesheet" href="../../css/app.css">
<style>
.mui-content>.mui-table-view:first-child{
margin-top: 0.133333rem;
}
.mui-bar-nav~.mui-content{
padding-top: 1.173333rem;
}
.mui-content{
padding-bottom: 1.173333rem;
}
input[type=checkbox] {
width: 0.426666rem;
height: 0.426666rem;
border: 0;
outline: 0!important;
background-color: transparent;
-webkit-appearance: none;
}
input[type=checkbox]:before {
content: '\e411';
}
input[type=checkbox]:checked:before {
content: '\e441';
}
input[type=checkbox]:before {
font-family: Muiicons;
font-size: 0.426666rem;
font-weight: 400;
line-height: 1;
text-decoration: none;
color: #81d8d0;
border-radius: 0;
background: 0 0;
-webkit-font-smoothing: antialiased;
}
input[type=checkbox]:checked:before {
color: #81d8d0;
}
.allinput[type=checkbox] {
width: 0.426666rem;
height: 0.426666rem;
border: 0;
outline: 0!important;
background-color: transparent;
-webkit-appearance: none;
}
.allinput[type=checkbox]:before {
content: '\e411';
}
.allinput[type=checkbox]:checked:before {
content: '\e441';
}
.allinput[type=checkbox]:before {
font-family: Muiicons;
font-size: 0.426666rem;
font-weight: 400;
line-height: 1;
text-decoration: none;
color: #fff;
border-radius: 0;
background: 0 0;
-webkit-font-smoothing: antialiased;
}
.allinput[type=checkbox]:checked:before {
color: #fff;
}
.popover_detail_numbtn .mui-numbox{
float: right;
border-radius: 0;
padding: 0 0.56rem;
height: 0.586666rem;
width:2rem;
}
.mui-numbox [class*=btn-numbox], .mui-numbox [class*=numbox-btn] {
font-size: 0.4rem;
line-height: 0.56rem;
width: 0.56rem;
height: 0.56rem;
color: #707070;
background-color: #fff;
}
.shop_input_num[type=number]{
font-size: 0.266666rem;
line-height: 0.56rem;
top: 0;
}
</style>
</head>
<body id="app" v-cloak>
<header class="mui-bar mui-bar-nav">
<a class="mui-action-back mui-pull-left mui_return_back"></a>
<h2 class="mui-title">购物车</h2>
</header>
<div class="mui-content">
<div class="mui_shopcar_list_box" v-for="data in items">
<div class="mui_order_item_title">
<div class="mui_adress_radio">
<input type="checkbox" v-model="data.shopselected" v-on:click="checkShop($index)">
</div>
<a href="javascript:;" class="look_shop" v-on:click="LookShop(data.id)">
{{data.shopname}} <img class="order_link" src="../../images/icon/order_link.png"/>
</a>
</div>
<ul class="mui-table-view mui-table-view-chevron mui_shopcar_list">
<li class="mui_shopcar_item" v-for="item in data.listgoods">
<div class="mui_adress_radio">
<input type="checkbox" v-model="item.selected" v-on:click="checkGoods($parent.$index,$index)">
</div>
<div class="mui_shopcar_img" v-on:click="LookGoods(item.id)">
<img src="../../images/423.jpg"/>
</div>
<div class="mui_shopcar_media">
<div class="mui_shopcar_title">
<p class="mui_shopcar_name">{{ item.name }}</p>
<span class="mui_shopcar_del" v-on:click="remove($parent.$index,$index)">
<a><img src="../../images/icon/19.png" alt="" /></a>
</span>
</div>
<p class="mui_shopcar_unit">单位：升</p>
<div class="mui_shopcar_pro">
<p class="mui_shopcar_price">{{item.price|currency '￥' 2}}</p>
<div class="popover_detail_numbtn">
<div class="mui-numbox" data-numbox-min='1' data-numbox-max='9'>
<button class="mui-btn mui-btn-numbox-minus" type="button" v-on:click.native="reduce($parent.$index,$index)">-</button>
<input class="mui-input-numbox shop_input_num" type="number" disabled value="{{item.count}}"/>
<button class="mui-btn mui-btn-numbox-plus" type="button" v-on:click.native="add($parent.$index,$index)">+</button>
</div>
</div>
</div>
</div>
</li>
<!--<li class="mui_shopcar_item">
<div class="mui_adress_radio">
<input name="address" type="checkbox">
</div>
<div class="mui_shopcar_img">
<img src="../../images/423.jpg"/>
</div>
<div class="mui_shopcar_media">
<div class="mui_shopcar_title">
<p class="mui_shopcar_name">内蒙古原产牛奶</p>
<span class="mui_shopcar_del">
<img src="../../images/icon/19.png" alt="" />
</span>
</div>
<p class="mui_shopcar_unit">单位：升</p>
<div class="mui_shopcar_pro">
<p class="mui_shopcar_price">￥ 50.00</p>
<div class="popover_detail_numbtn">
<div class="mui-numbox" data-numbox-min='1' data-numbox-max='9'>
<button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
<input id="test" class="mui-input-numbox" type="number" value="5" />
<button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
</div>
</div>
</div>
</div>
</li>-->
</ul>
</div>
</div>
<div class="mui_shopcar_bar">
<div class="mui_adress_radio">
<input type="checkbox" class="allinput" v-model="selectAll">
全选
</div>
<div class="mui_shopcar_sumbtn">
<p class="mui_shopcar_sum">合计：{{ total|currency '￥' 2}}</p>
<button id="order_true" type="button" v-on:click.native="Submit()">结算</button>
</div>
</div>
<script type="text/javascript" src="../../js/app.js" ></script>
<script src="../../js/mui.min.js"></script>
<script src="../../js/vue.min.js"></script>
<script src="../../js/jquery-1.8.3.min.js" ></script>
<script>
mui.init();//初始化
mui.plusReady(function(){})
var vm = new Vue({
el: "#app",
data: {
OrderTotal:0,//用来保存商品总价
items: [//加入购物车商品
{
id:1,
shopname:'内蒙古原产牛奶',
shopselected:false,
listgoods:[
{
id:101,
name: '奶片',
price:1.3,
count:2,
selected:false
},
{
id:102,
name: '小辣椒',
price:100,
count:1,
selected:false
},
{
id:103,
name: '小辣椒22222',
price:100,
count:1,
selected:false
}
]
},
{
id:2,
shopname:'云端电子',
shopselected:false,
listgoods:[
{
id:201,
name: '三星',
price:4000,
count:2,
selected:false
},
{
id:202,
name: '华为1',
price:100,
count:1,
selected:false
},
{
id:203,
name: '华为2',
price:100,
count:1,
selected:false
},
{
id:204,
name: '华为3',
price:100,
count:1,
selected:false
}
]
},
{
id:3,
shopname:'小米官方商店',
shopselected:false,
listgoods:[
{
id:301,
name: '小米4',
price:1.3,
count:2,
selected:false
}
]
}
]
},
//computed相当于属性的一个实时计算，如果实时计算里关联了对象，那么当对象的某个值改变的时候，同事会出发实时计算。
computed: {
selectAll:{
//动态判断全选按钮是否选中（根据 选中的商店数量==items数组长度）
get:function(){
return this.items.filter(function(item){
return item.shopselected == true;
}).length == this.items.length;
},
//设置全选
set:function(val){
this.items.forEach(function(item){//遍历所有商店
item.shopselected = val;//所有商店选中
item.listgoods.forEach(function(list){//遍历所有商品
list.selected = val;//所有商品选中
})
});
}
},
num:function(){
var num = 0;
this.items.forEach(function(item){//遍历商家数组
item.listgoods.filter(function(a){//遍历商品数组
return a.selected//选择选中的商品
}).map(function(a){
return a.count//计算商品数量*商品单价
}).forEach(function(a){
num += a;
});
})
return num;//返回总价
},
//计算总价
total:function(){
var total = 0;
this.items.forEach(function(item){//遍历商家数组
item.listgoods.filter(function(a){//遍历商品数组
return a.selected//选择选中的商品
}).map(function(a){
return a.count*a.price//计算商品数量*商品单价
}).forEach(function(a){
total += a;
});
})
this.OrderTotal = total;//更新商品总价
return total;//返回总价
}
},
methods:{
//点击商店选中所有商品
checkShop:function(pID){
var self = this.items[pID];
if(self.shopselected != true){
self.listgoods.forEach(function(list){
list.selected = true;
})
}else{
self.listgoods.forEach(function(list){
list.selected = false;
})
}
},
//选择某商品 判断商店是否全选
checkGoods:function(pID,id){
var self = this.items[pID];//点击单选框的父节点
if(self.listgoods[id].selected){//判断当选框是否备选中
self.listgoods.filter(function(item){
return item.selected == true;
}).length-1 == self.listgoods.length ? self.shopselected = true : self.shopselected = false;
}else{
self.listgoods.filter(function(item){
return item.selected == true;
}).length+1 == self.listgoods.length ? self.shopselected = true : self.shopselected = false;
}
},
//增加商品数量 最多购买100件
add:function (parentID,ID) {//parentID是商家id,ID是商品id
var self = this.items[parentID].listgoods[ID];
if(self.count >100){
return false;
}
self.count++;
},
//减少商品数量 最少买一件
reduce:function(parentID,ID){//parentID是商家id,ID是商品id
var self = this.items[parentID].listgoods[ID];
if(self.count <= 1){
return false
}
self.count--;
},
//移除商品函数
remove:function(parentID,ID){//parentID是商家id,ID是商品id
var self = this.items[parentID];
self.listgoods.length == 1 ? this.items.splice(parentID, 1) : self.listgoods.splice(ID, 1);//如果删除最后一个商品，则商家一并删除
},
//结算函数
Submit:function(){
//获取选中的商家及相应的商品
var TotalPrice = this.OrderTotal;//存放要支付的总价
var OrderArry = [];//存放选中的商品数组
this.items.forEach(function(item){//遍历商家数组
if(item.shopselected){//如果商家备选中则其下商品均被选中，直接添加数组
return OrderArry.push(item)
}else{//如果商家没有选中，继续遍历旗下商品是否备选中
var arry = {//设置临时数组，来保存没有选中商店的数据
'id' : item.id,//商店id
'shopname' : item.shopname,//商店名字
'shopselected' : item.shopselected,//商店是否备选中
'listgoods' : []//商店旗下的商品数组
};
item.listgoods.filter(function(list){//遍历商店旗下的商品数组
return list.selected//过滤所有选中的商品
}).map(function(a){
return arry.listgoods.push(a)//将选中的商品添加到数组中
});
if(arry.listgoods.length > 0){//如果有商品选中在添加到数组
OrderArry.push(arry)
}
}
});
console.log(OrderArry)//打印选中的商品数组
console.log(TotalPrice)//打印总价
//结算跳转页面
//打开确认订单
mui.openWindow({
url: 'order_true.html',
id:'order_true.html',
extras:{//自定义扩展参数，可以用来处理页面间传值
'BuyMethod' : 'ShoppingCartSettlement',//结算方式
'ItemList' : OrderArry,//选择的商品数组
'TotalPrice' : TotalPrice//要支付的总价
},
waiting:{
autoShow:true,//自动显示等待框，默认为true
title:'正在加载...'//等待对话框上显示的提示内容
}
});
},
//查看商家
LookShop:function(id){
mui.openWindow({
url: '../SellerHome/seller_index.html',
id:'../SellerHome/seller_index.html',
extras:{
//自定义扩展参数，可以用来处理页面间传值
},
waiting:{
autoShow:true,//自动显示等待框，默认为true
//title:'正在加载...'//等待对话框上显示的提示内容
}
});
},
//查看商品
LookGoods:function(id){
mui.openWindow({
url: '../Selected/selected_list_details.html',
id:'../Selected/selected_list_details.html',
extras:{
//自定义扩展参数，可以用来处理页面间传值
},
waiting:{
autoShow:false,//自动显示等待框，默认为true
//title:'正在加载...'//等待对话框上显示的提示内容
}
});
},
}
});
</script>
</body>
</html>看完上述内容，你们掌握vue中怎么实现一个购物车插件的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注编程网行业资讯频道，感谢各位的阅读！
