vue实现购物车案例

2020年05月30日作者：若星@原文

本文实例为大家分享了vue实现购物车的具体代码，供大家参考，具体内容如下

<!DOCTYPE html>
<html lang="en">
<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>购物车案例</title>
 <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<style>
 *{
 padding: 0;
 margin:0
 }
 ul li{
 width: 1200px;
 display: flex;
 align-items: center;
 justify-content: center;
 }
 li div,.total{
 display: inline-block;
 width:200px;
 height: 50px;
 line-height: 50px;
 text-align: center;
 }
 button{
 width: 60px;
 height: 40px;
 text-align: center;
 line-height: 40px;
 }

</style>
<body>

 <div id="app">
 <ul>
  <goodsitem 
  v-for="item in goodslist" 
  :item="item" 
  :key="item.id"
  @onchange="(type)=>{handleCount(type,item)}"
  @ondelete="()=>{handleDelete(item.id)}">
  </goodsitem>
  <div class="total" style="padding-left: 113px">总价:{{total}}</div>
 </ul>
 </div>

</body>
<script>
 var computed={
 props:{
  count:{
   type:Number,
   require:true
  }
 },
 methods:{
  handleCount(type){
  this.$emit('onchange',type)
  }
 },
 template:`<div style="width:200px">
   <button @click="handleCount('sub')">-</button>
   <span>{{count}}</span>
   <button @click="handleCount('add')" >+</button>
   </div>
 
 `
 
 }
 var goodsitem={
 props:{
  item:{
  type:Object,
  require:true
  }
 },
 methods:{
  handleCount(type){
  this.$emit('onchange',type)
  },
  handleDelete(){
  this.$emit('ondelete')
  }
 },
 components:{
  computed
 },
 template:`<li>
   <div>{{item.goodsName}}</div>
   <div>{{item.price}}</div>
   <computed :count="item.count" @onchange="handleCount"></computed>
   <div>{{item.sum}}</div>
   <div><button @click="handleDelete">删除</button></div>
   </li>
   `
 }

 var app=new Vue({
 el:"#app",
 data:{
  goodslist:[{
  id:1,
  goodsName:"小可爱",
  price:100,
  count:1,
  sum:100
  },{
  id:2,
  goodsName:"小可爱",
  price:200,
  count:2,
  sum:400
  },{
  id:3,
  goodsName:"小可爱",
  price:300,
  count:3,
  sum:900
  },{
  id:4,
  goodsName:"小可爱",
  price:400,
  count:1,
  sum:400
  },
  ]
 },
 methods:{
  handleCount(type,item){
  if(type=='add'){
   item.count+=1
  }else{
   if(item.count==1){
   this.handleDelete(item.id) 
   return
   }
   item.count-=1
  }
  item.sum=item.count*item.price
  },
  handleDelete(id){
  return this.goodslist=this.goodslist.filter((item)=>{
   return id!=item.id
  })
  }
 },
 computed:{
  total(){
  return this.goodslist.reduce((total,item)=>{
   return total+=item.sum
  },0)
  }
 },
 components:{
  goodsitem
 }
 })
</script>
</html>

实现效果图：

小编再为大家分享一段收藏的vue购物车逻辑代码，也谢谢原作者的分享

<template>
 <div class="hello">
 <div class="main">
 <div v-if="hasList">
  <div class="cart-box">
   <div class="cart-list" v-for="(item,index) in carts" :key="index">
    <!-- <icon v-if="item.selected" type="success" color="red" data-index="index" class="cart-pro-select" @click="selectList"/>
    <icon v-else type="circle" class="cart-pro-select" data-index="index" @click="selectList"/> -->
    <router-link to="/"><img class="cart-thumb" :src="item.image" /></router-link>
    <p class="cart-pro-name">{{item.title}}</p>
    <p class="cart-pro-price">￥{{item.price}}</p>
    <div class="cart-count-box">
     <p class="cart-count-down" @click="minusCount(item.id)" data-obj="obj" data-index="index">-</p>
     <p class="cart-count-num">{{item.num}}</p>
     <p class="cart-count-add" @click="addCount(item.id)" data-index="index">+</p>
    </div>
    <p class="cart-del" @click="deleteList" data-index="index">×</p>
   </div>
  </div>
 
  <div class="cart-footer">
   <!-- <icon v-if="selectAllStatus" type="success_circle" color="#fff" class="total-select" @click="selectAll"/>
   <icon v-else type="circle" color="#fff" class="total-select" @click="selectAll"/> -->
   <div class="order-icon">
    <router-link to="/"><img src="../../static/image/icon3.png" /></router-link>
   </div>
   <p>全选</p>
   <p class="cart-toatl-price">￥{{totalPrice}}</p>
  </div>
 </div>
 <div v-else>
  <div class="cart-no-data">购物车是空的哦~</div>
 </div>
</div>
 </div>
</template>
<script>
 
// import {Toast} from 'vant'
export default {
 data () {
 return {
  carts: [{id: 1, title: '新鲜芹菜 半斤', image: '../../static/image/s5.png', num: 4, price: 0.01, selected: true},
  {id: 2, title: '素米 500g', image: '../../static/image/s6.png', num: 1, price: 0.03, selected: true}],
  hasList: true,
  totalPrice: 0,
  selectAllStatus: true,
  obj: {
  name: 'hello'
  }
 }
 },
 created () {
 // this.$set({
 // hasList: true,
 // carts: [
 //  {id: 1, title: '新鲜芹菜 半斤', image: '../../static/image/s5.png', num: 4, price: 0.01, selected: true},
 //  {id: 2, title: '素米 500g', image: '../../static/image/s6.png', num: 1, price: 0.03, selected: true}
 // ]
 // })
 this.getTotalPrice()
 },
 methods: {
 selectList (e) {
  console.log(e)
  let carts = this.carts
  let index = 1
  const selected = carts[index].selected
  carts[index].selected = !selected
  this.setData({
  carts: carts
  })
  this.getTotalPrice()
 },
 deleteList (e) {
  const index = e.currentTarget.dataset.index
  let carts = this.carts
  carts.splice(index, 1)
  this.$set({
  carts: carts
  })
  if (!carts.length) {
  this.$set({
   hasList: false
  })
  } else {
  this.getTotalPrice()
  }
 },
 selectAll (e) {
  let selectAllStatus = this.data.selectAllStatus
  selectAllStatus = !selectAllStatus
  let carts = this.carts
 
  for (let i = 0; i < carts.length; i++) {
  carts[i].selected = selectAllStatus
  }
  this.$set({
  selectAllStatus: selectAllStatus,
  carts: carts
  })
  this.getTotalPrice()
 },
 addCount (e) {
  let carts = this.carts
  let num = carts[e - 1].num
  num = num + 1
  carts[e - 1].num = num
  this.$set(this.carts, carts)
  this.getTotalPrice()
 },
 minusCount (e) {
  // const obj = e.currentTarget.dataset.obj
  let carts = this.carts
  let num = carts[e - 1].num
  if (num <= 1) {
  return false
  }
  num = num - 1
  carts[e - 1].num = num
  this.$set(this.carts, carts)
  this.getTotalPrice()
 },
 getTotalPrice () {
  let carts = this.carts
  let total = 0
  for (let i = 0; i < carts.length; i++) {
  if (carts[i].selected) {
   total += carts[i].num * carts[i].price
  }
  }
  this.$set({
  carts: carts,
  totalPrice: total.toFixed(2)
  })
 }
 }
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<!-- scoped css样式仅仅在当前模板使用-->
<style scoped>
.cart-box{
 padding-bottom: 50px;
}
.cart-list{
 position: relative;
 padding: 10px 10px 10px 142px;
 height: 92px;
 border-bottom: 1px solid #e9e9e9;
}
.cart-list .cart-pro-select{
 position: absolute;
 left: 10px;
 top: 45px;
 width: 25px;
 height: 25px;
}
 
.cart-list .cart-thumb{
 position: absolute;
 top: 10px;
 left: 42px;
 width: 92px;
 height: 92px;
}
.cart-list .cart-pro-name{
 display: inline-block;
 width: 150px;
 height: 52px;
 line-height: 25px;
 overflow: hidden;
}
.cart-list .cart-pro-price{
 display: inline-block;
 float: right;
 height: 52px;
 line-height: 25px;
}
.cart-list .cart-count-box{
 position: absolute;
 left: 142px;
 bottom: 10px;
 width: 125px;
 height: 40px;
}
.cart-list .cart-count-box p{
 display: inline-block;
 line-height: 40px;
 p-align: center;
}
.cart-count-down,.cart-count-add{
 position: absolute;
 top:-5px;
 font-size: 22px;
 width: 25px;
 height: 100%;
}
.cart-count-num{
 margin-left: 17px;
 width: 75px;
}
.cart-del{
 position: absolute;
 right: 10px;
 bottom: 0px;
 width: 40px;
 height: 40px;
 line-height: 40px;
 p-align: center;
 font-size: 22px;
}
.cart-footer{
 position: fixed;
 bottom: 15%;
 left: 0;
 width: 100%;
 height: 45px;
 line-height: 45px;
 box-sizing: border-box;
 background: #AB956D;
 color: #fff;
}
.total-select{
 position: absolute;
 left: 10px;
 top: 12px;
 width: 22px;
 height: 22px;
}
.order-icon{
 position: absolute;
 right: 20px;
 top: 12px;
 width: 24px;
 height: 24px;
}
.order-icon image,.order-icon navigator{
 display: block;
 width: 24px;
 height: 24px;
}
.cart-toatl-price{
 float: right;
 width: 60px;
}
 
.cart-no-data{
 padding:20px 0;
 color: #999;
 p-align: center;
}
</style>

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