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vue2.0实现购物车功能

 

购物车功能是一件比较繁琐的事情,逻辑功能太多,今天就用vue2.0实现一个简单的购物车功能,数据都本地自己写的假数据

功能列表:

1、全选和单选结算

2、减少和增加数量

3、商品的删除

界面搭建以及布局,这里,我直接用bootstrap快速搭建的一个简单的布局

复制代码
<div class="container" id="app">
            <h2 class="page-header">购物车</h2>
            <table class="table">
                <tr>
                    <th><label><input type="checkbox" @click="check_all" :checked="check_goods.length == cart_list.length"/>全选</label></th>
                    <th>商品名称</th>
                    <th>商品价格</th>
                    <th>数量</th>
                    <th>操作</th>
                </tr>
                <tr v-for="(cart,index) in cart_list" :key="index">
                    <td><input type="checkbox" :value="cart" v-model="check_goods" /></td>
                    <td>{{cart.goods_name}}</td>
                    <td>{{cart.goods_price}}</td>
                    <td class="col-xs-3">
                        <span class="btn btn-default" v-on:click="reduce(cart)">-</span>
                        <input class="btn-group" type="number" v-model="cart.num" />
                        <span class="btn btn-default" v-on:click="add_num(cart)">+</span>
                    </td>
                    <td>
                        <button class="btn btn-danger" v-on:click="delete_num">删除</button>
                    </td>
                </tr>
            </table>
            <div>
                总计:共 {{cart_list.length    }}件商品,已选择 {{total_num}} 件
                <div class="pull-right">
                    合计:{{total_price}}元
                    <a href="" class="btn btn-success" :disabled="check_goods.length <= 0">去结算</a>
                </div>
            </div>
        </div>
复制代码

所有的数据都是自己本地写的

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data() {
    return {
        cart_list: [{
          goods_name: '小米6',
          goods_price: '1699',
          num: '2',
        },{
           goods_name: '红米3',
           goods_price: '699',
           num: '1',
        },{
           goods_name: '小米8',
           goods_price: '2899',
           num: '1',
        }],
           check_goods: [] //已选择的商品
          }
    },

计算属性:

计算出商品中,总价和数量

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              computed: {
//              总价
                total_price() {
                    let price = 0<br>                        
                    this.check_goods.forEach(item => {
//                      总价 = 价格 * 数量
                        price += Number(item.goods_price) * Number(item.num)
                    })
                    return price
                },
//              数量
                total_num() {
                    let t_num = 0;
                    this.check_goods.forEach(item => {
                        t_num += Number(item.num);
                    })
                    return t_num
                }
            },

 实现商品增加减少,删除功能

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              methods:{
//              商品类减减
                reduce(cart) {
                    if(cart.num <=0) {
                        cart.num = 0
                    } else {
                        cart.num --
                    }
                },
//              商品累加
                add_num(cart) {
                    cart.num++
                },
//              删除商品
                delete_num(cart){
                    this.check_goods.splice(this.check_goods.indexOf(cart),1)
                    this.cart_list.splice(this.cart_list.indexOf(cart),1)
                },
//              全选
                check_all() {
                    if (this.check_goods.length >0) {
                        this.check_goods = []
                    } else {
                        this.cart_list.forEach(item => {
                            this.check_goods.push(item)
                        })
                    }
                }
            }

  至此我们的购物车基本功能就完成了,

posted @ 2019-07-29 22:38  Haisen'Blogs  阅读(494)  评论(0编辑  收藏  举报

reeber

开车啦

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