vue实现商城购物车功能

本文实例为大家分享了vue实现商城购物车功能的具体代码,供大家参考,具体内容如下

首先,先上最终的效果图

效果并不是很好看,但是这不是重点。

首先,我们先看下布局:

<template>

<div class="shopcar" id="demo04">

<div class="header-title">

<h3>购物车</h3>

</div>

<div class="car-list">

<ul>

<li class="car-item" v-for="(item,index) in good_list">

<div class="input-block">

<label class="input-label" :class="{active: item.is_selected}" :for="'car-checkbox-'+index" @click="select_one(index)"></label>

</div>

<div class="car-item-content">

<div class="car-img">

<img :src="item.img" />

</div>

<div class="car-cont">

<h3>{{item.title}}</h3>

<div class="cat-desc">

<span v-for="spec in item.spec_item">{{spec}}</span>

</div>

</div>

<div class="num">

<span @click="reduce(index)">-</span>

<span>{{item.num}}</span>

<span @click="add(index)">+</span>

</div>

<div class="car-price">

<span class="car-price">¥{{item.price}}</span>

<span class="car-num">X{{item.num}}</span>

</div>

</div>

</li>

</ul>

</div>

<div class="car-footer">

<div class="foot-car">

<label for="foot-check" class="input-label" :class="{active: selected_all}" @click="slect_all"></label>

</div>

<div class="total-cont">

<span>总价:{{totalPrice}}</span>

<span>共{{totalNum}}件</span>

</div>

<div class="btn-box">

<button>立即下单</button>

</div>

</div>

</div>

</template>

非常常见的布局,微商城购物车随处可见,先说明下,在这里,实现选中的功能并不是用传统的label+checkbox实现,而是一个单独的label,目的是为了简化dom结构,在传统的jq项目或者zepto项目中,一般会会这样写,主要是为了方便操作demo,但是vue项目完全不用考虑dom的操作,怎么方便怎么来就ok。

在加些简单的样式,

.header-title

height 42px

line-height 42px

background #f5f5f5

border-bottom 1px solid #ddd

.header-title h3

font-weight normal

text-align center

.car-list

background #f2f2f2

margin-top 12px

padding 8px

.car-item

border-bottom 1px solid #ddd

position relative

height 76px

overflow hidden

.car-checkbox

display none

.input-block

width 30px

float left

height 55px

line-height 55px

.input-label

cursor pointer

position absolute

width 18px

height 18px

top 18px

left 0

background #fff

border:2px solid #ccc

border-radius 50%

.input-label:after

opacity 0

content ''

position absolute

width 9px

height 5px

background transparent

top 6px

left 6px

border 2px solid #333

border-top none

border-right none

-webkit-transform rotate(-45deg)

-moz-transform rotate(-45deg)

-o-transform rotate(-45deg)

-ms-transform rotate(-45deg)

transform rotate(-45deg)

.car-img

width 64px

height 64px

float left

overflow hidden

.car-img img

width 100%

.input-label.active

background #F15A24

.car-cont

margin-left 100px

.car-cont h3

font-weight normal

line-height 24px

font-size 14px

.car-price

position absolute

right 12px

bottom 0px

width 40px

height 40px

text-align right

.car-price span

display block

height 24px

line-height 24px

width 100%

.car-footer

height 60px

background #f5f5f5

position fixed

bottom 0

left 0

right 0

.foot-car

width 42px

height 60px

float left

margin-left 12px

position relative

.total-cont

height 60px

line-height 60px

font-size 16px

float left

.total-cont span

display inline-block

margin-left 12px

.btn-box

float right

height 60px

line-height 60px

.btn-box button

height 100%

width: 100px

border none

background #F15A24

color #fff

font-size 16px

.num

position absolute

top 28px

right 25px

width 120px

.num span

display inline-block

width 28px

height 28px

float left

text-align center

line-height 28px

border 1px solid #ddd

font-size 14px

最近在学习stylus的使用,所以,就当做练习了。

接下就是javascript了。

export default {

data () {

return {

good_list: [

{

title: 'Apple iPhone 6s 16GB 玫瑰金色 移动联通电信4G手机',

img: "http://sc.tywebs.cn/public/upload/goods/2017/04-27/a767693b9a84747f25335f0e33d3d380.jpg",

num: 2,

price: 6070.00,

spec_item:[

'内存:16G',

'网络:4G',

'颜色:玫瑰金'

],

is_selected: false

},{

title: 'Apple iPhone 6s 32GB 玫瑰金色 移动联通电信4G手机',

img: 'http://sc.tywebs.cn/public/upload/goods/2017/04-27/a767693b9a84747f25335f0e33d3d380.jpg',

num: 2,

price: 4570.00,

spec_item:[

'内存:32G',

'网络:4G',

'颜色:玫瑰金'

],

is_selected: true

},{

title: 'Apple iPhone 6s 8GB 玫瑰金色 移动联通电信4G手机',

img: 'http://sc.tywebs.cn/public/upload/goods/2017/04-27/a767693b9a84747f25335f0e33d3d380.jpg',

num: 2,

price: 4870.00,

spec_item:[

'内存:8G',

'网络:4G',

'颜色:玫瑰金'

],

is_selected: false

},{

title: 'Apple iPhone 6s 128GB 玫瑰金色 移动联通电信4G手机',

img: 'http://sc.tywebs.cn/public/upload/goods/2017/04-27/a767693b9a84747f25335f0e33d3d380.jpg',

num: 2,

price: 10568.00,

spec_item:[

'内存:128G',

'网络:4G',

'颜色:玫瑰金'

],

is_selected: true

},

],

totalPrice: 0,

totalNum: 0,

selected_all: false

}

},

mounted: function () {

this.getTotal();

},

watch: {

'good_list': {

handler: function (val, oldVal) {

// console.log(val)

return val;

},

deep: true

}

},

methods: {

getTotal () {

this.totalPrice = 0

this.totalNum = 0

for (var i = 0; i < this.good_list.length; i++) {

var _d = this.good_list[i]

if(_d.is_selected){

this.totalPrice += _d['price'] * _d['num']

this.totalNum +=_d['num']

}

}

},

select_one (index) {

if(this.good_list[index].is_selected == true){

this.good_list[index].is_selected = false

}else{

this.good_list[index].is_selected = true

}

this.getTotal()

},

slect_all () {

if(this.selected_all){

for (var i = 0; i < this.good_list.length; i++) {

this.good_list[i].is_selected = false;

}

this.selected_all = false

}else{

for (var i = 0; i < this.good_list.length; i++) {

this.good_list[i].is_selected = true;

}

this.selected_all = true

}

this.getTotal()

},

reduce (index) {

if(this.good_list[index].num <= 1) return;

this.good_list[index].num --

this.getTotal()

},

add (index) {

this.good_list[index].num ++

this.getTotal()

}

}

}

这里用mock数据来代替后台请求数据的动作,为了方便测试,逻辑比较简单,首先getTotal这个方法用来计算选中的item的数量以及总价,select_one用来处理单个选中的逻辑,slect_all 用来处理全部选中以及全部取消选中的操作,reduce用来处理处理减操作,顾名思义add用来处理加的操作。当然在真实的开发中,还会有校验库存的动作,每次加减都要校验库存。数据处理也会更复杂,但是闻琴弦而知雅意,器原理都是相通的。

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