上次我们为商品分类菜单添加了显示购物数量,这篇我们继续推进项目,来实现购物车的详情页面,在开始之前我们先看它在页面中的样子:

如上所示,此页面包含了购物列表,而它由商品名称,单价,增减商品功能构成,增减商品功能我们在商品列表中实现过,那么我们现在可以进行复用。

搭出购物车结构

我们将购物车底部构建出来,

<templete><div class="shopcart" :class="{'highligh':totalCount>0}">        <div class="shopcart-wrapper">                    </div></div></templete>

老情况,在templete模板下的shopcart-wrapper内完成底部购物车一栏:

1 count大于0.让它打开

 <!-- 左=>内容包含购物车icon 金额 配送费 -->            <div class="content-left">                <div class="logo-wrapper" :class="{'highligh':totalCount>0}" @click="toggleList">                    <span class="icon-shopping_cart logo" :class="{'highligh':totalCount>0}"></span>                    <i class="num" v-show="totalCount">{{totalCount}}</i>                </div>                <div class="desc-wrapper">                    <p class="total-price" v-show="totalPrice">¥{{totalPrice}}</p>                    <p class="tip" :class="{'highligh':totalCount>0}">另需{{poiInfo.shipping_fee_tip}}</p>                </div>            </div>            <!-- 去结算 -->            <div class="content-right" :class="{'highligh':totalCount>0}">                {{payStr}}            </div>

搭建所选商品列表

如图所示,我们分好结构,紧接着搭建所选商品的列表

所选商品的列表 shopcart-list默认隐藏的,也就是说我们在没有选择食品的时候,点击购物车它不会展开。

1.list-hearder,左右结构包括1号口袋与清空购物车2.list-content 列表,存放我们选择的食物2.1左边是我们的食物名字,商品描述;右侧是数量,加减商品的组件。<div class="shopcart-list" v-show="listShow" :class="{'show':listShow}">                <!--列表顶部满减信息-->                <div class="list-top" v-if="poiInfo.discounts2">                    {{poiInfo.discounts2[0].info}}                </div>                <!--1号口袋 清空功能-->                <div class="list-header">                    <h3 class="title">1号口袋</h3>                    <div class="empty" @click="emptyFn">                        <img src="./ash_bin.png" />                        <span>清空购物车</span>                    </div>                </div>                <!--所选商品列表-->                <div class="list-content" ref='listContent'>                    <ul>                        <li class="food-item" v-for="food in selectFoods">                            <div class="desc-wrapper">                                <!--左侧-->                                <div class="desc-left">                                    <!--所选商品名字-->                                    <p class="name">{{food.name}}</p>                                    <!--所选商品描述 unit 例 des 霆锋苦辣鸡腿堡1个-->                                    <p class="unit" v-show="!food.description">{{food.unit}}</p>                                    <p class="description" v-show="food.description">{{food.description}}</p>                                </div>                                <!--商品单价-->                                <div class="desc-right">                                    <span class="price">¥{{food.min_price}}</span>                                </div>                            </div>                            <!--复用商品增减组件 Cartcontrol-->                            <div class="cartcontrol-wrapper">                                <Cartcontrol :food='food'></Cartcontrol>                            </div>                        </li>                    </ul>                </div>                <div class="list-bottom"></div>            </div>

加入遮罩层

        <!-- 遮罩层 -->        <div class="shopcart-mask" v-show="listShow" @click="hideMask()"></div>

到这里,结构咱们就搭好了。

注册组件,添加功能

我们通过props为购物车组件传入所需要的数据;

计算属性:

通过totalCount计算所选的商品数量;

通过totalPrice计算所选商品的总价;

通过payStr控制去结算;

listShow是我们控制购物车详情页展示的要点,依据totalCount所选商品数量对fold折叠进行控制,fold为true,商品数量为0.购物车详情页为折叠状态。

接着我们将状态取反赋值到show,并且依据show,来控制商品详情页面商品一定多时,可以进行鼠标滚动。

方法:

通过toggleList点击购物车logo时候,进行判断,如果没有选择商品那么我们什么也不做。如果我们选择了商品,那么将fold取反。因为我们在计算属性listShow中设置过实例中的fold属性为true,所有它是折叠的。在我们取反后,它就会展开。

emptyFn清空购物车

最后我们点击遮罩层的时候,让遮罩层隐藏,也就是fold为true。

<script>    // 导入BScroll    import BScroll from 'better-scroll'    // 导入Cartcontrol    import Cartcontrol from 'components/Cartcontrol/Cartcontrol'    export default {        data() {            return {                fold: true            }        },        props: {            poiInfo: {                type: Object,                default: {}            },            selectFoods: {                type: Array,                default() {                    return [                        //                        {                        //                            min_price: 10,                        //                            count: 3                        //                        },                        //                        {                        //                            min_price: 7,                        //                            count: 1                        //                        }                    ];                }            }        },        computed: {            // 总个数            totalCount() {                let num = 0;                this.selectFoods.forEach((food) => {                    num += food.count;                });                return num;            },            // 总金额            totalPrice() {                let total = 0;                this.selectFoods.forEach((food) => {                    total += food.min_price * food.count;                });                return total;            },            payStr() {                if(this.totalCount > 0) {                    return "去结算";                } else {                    return this.poiInfo.min_price_tip;                }            },            listShow() {                if(!this.totalCount) { // 个数为0                    this.fold = true;                    return false;                }                let show = !this.fold;                // BScoll相关                if(show) {                    this.$nextTick(() => {                        if(!this.shopScroll) {                            this.shopScroll = new BScroll(this.$refs.listContent, {                                click: true                            });                        } else {                            this.shopScroll.refresh();                        }                    });                }                return show;            }        },        methods: {            toggleList() {                if(!this.totalCount) { // 个数为0                    return;                }                this.fold = !this.fold;            },            emptyFn() {                this.selectFoods.forEach((food) => {                    food.count = 0;                });            },            hideMask() {                this.fold = true;            }        },        components: {            Cartcontrol,            BScroll        }    }</script>

样式

<style>.shopcart-wrapper{    width: 100%;    height: 51px;    background: #514f4f;    position: fixed;    left: 0;    bottom: 0;    display: flex;    z-index: 99;}.shopcart-wrapper.highligh{    background: #2d2b2a;}.shopcart-wrapper .content-left{    flex: 1;}.shopcart-wrapper .content-left .logo-wrapper{    width: 50px;    height: 50px;    background: #666666;    border-radius: 50%;    position: relative;    top: -14px;    left: 10px;    text-align: center;    float: left;}.shopcart-wrapper .content-left .logo-wrapper.highligh{    background: #ffd161;}.shopcart-wrapper .content-left .logo-wrapper .logo{    font-size: 28px;    color: #c4c4c4;    line-height: 50px;}.shopcart-wrapper .content-left .logo-wrapper .logo.highligh{    color: #2D2B2A;}.shopcart-wrapper .content-left .logo-wrapper .num{    width: 15px;    height: 15px;    line-height: 15px;    border-radius: 50%;    font-size: 9px;    color: white;    background: red;    position: absolute;    right: 0;    top: 0;}.shopcart-wrapper .content-left .desc-wrapper{    float: left;    margin-left: 13px;}.shopcart-wrapper .content-left .desc-wrapper .total-price{    font-size: 18px;    line-height: 33px;    color: white;}.shopcart-wrapper .content-left .desc-wrapper .tip{    font-size: 12px;    color: #bab9b9;    line-height: 51px;}.shopcart-wrapper .content-left .desc-wrapper .tip.highligh{    line-height: 12px;}.shopcart-wrapper .content-right{    flex: 0 0 110px;    font-size: 15px;    color: #BAB9B9;    line-height: 51px;    text-align: center;    font-weight: bold;}.shopcart-wrapper .content-right.highligh{    background: #FFD161;    color: #2D2B2A;}.shopcart-wrapper .shopcart-list{    position: absolute;    left: 0;    top: 0;    z-index: -1;    width: 100%;}.shopcart-wrapper .shopcart-list.show{    transform: translateY(-100%);}.shopcart-wrapper .shopcart-list .list-top{    height: 30px;    text-align: center;    font-size: 11px;    background: #f3e6c6;    line-height: 30px;    color: #646158;}.shopcart-wrapper .shopcart-list .list-header{    height: 30px;    background: #F4F4F4;}.shopcart-wrapper .shopcart-list .list-header .title{    float: left;    border-left: 4px solid #53c123;    padding-left: 6px;    line-height: 30px;    font-size: 12px;}.shopcart-wrapper .shopcart-list .list-header .empty{    float: right;    line-height: 30px;    margin-right: 10px;    font-size: 0;}.shopcart-wrapper .shopcart-list .list-header .empty img{    height: 14px;    margin-right: 9px;    vertical-align: middle;}.shopcart-wrapper .shopcart-list .list-header .empty span{    font-size: 12px;    vertical-align: middle;}.shopcart-wrapper .shopcart-list .list-content{    max-height: 360px;    overflow: hidden;    background: white;}.shopcart-wrapper .shopcart-list .list-content .food-item{    height: 38px;    padding: 12px 12px 10px 12px;    border-bottom: 1px solid #F4F4F4;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper{    float: left;    width: 240px;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-left{    float: left;    width: 170px;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-left .name{    font-size: 16px;    margin-bottom: 8px;        /* 超出部分隐藏*/    -webkit-line-clamp: 1;    display: -webkit-box;    -webkit-box-orient: vertical;    overflow: hidden;    height: 16px;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-left .unit{    font-size: 12px;    color: #B4B4B4;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-left .description{    font-size: 12px;    color: #B4B4B4;            /* 超出部分隐藏*/    overflow: hidden;    height: 12px;}.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-right{    float: right;    width: 70px;    text-align: right;    }.shopcart-wrapper .shopcart-list .list-content .food-item .desc-wrapper .desc-right .price{    font-size: 12px;    line-height: 38px;}.shopcart-wrapper .shopcart-list .list-content .food-item .cartcontrol-wrapper{    float: right;    margin-top: 6px;}.shopcart .shopcart-mask{    position: fixed;    top: 0;    right: 0;    width: 100%;    height: 100%;    z-index: 98;    background: rgba(7,17,27,0.6);}    </style>

总结

我们从搭购物车结构,到所选商品列表细化,这里我们复用了增减商品的组件,然后加入遮罩层。通过计算属性与方法,加入控制逻辑完成了购物车的详情页面。
下一篇我们来实现商品的详情页面,下周我们不见不散。