vue实现购物车功能

vue是前端轻量级MVVM框架，入门门槛相对较低，今天用Vue做一个购物车实例，发表以便记录

原理分析和实现

首先，还是先把布局写好，和引入vue，准备vue实例，这个不多说，代码如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .fl{
            float: left;
        }
        .fr{
            float: right;
        }
       blockquote, body, dd, div, dl, dt, fieldset, form, h1, h2, h3, h4, h5, h6, img, input, li, ol, p, table, td, textarea, th, ul {
            margin: 0;
            padding: 0;
        }
       .clearfix{
          zoom: 1;
       }
        .clearfix:after {
            clear: both;
        }
        .clearfix:after {
            content: '.';
            display: block;
            overflow: hidden;
            visibility: hidden;
            font-size: 0;
            line-height: 0;
            width: 0;
            height: 0;
        }
        a{
            text-decoration: none;
            color: #333;
        }
        img{vertical-align: middle;}
        .page-shopping-cart {
            width: 1200px;
            margin: 50px auto;
            font-size: 14px;
            border: 1px solid #e3e3e3;
            border-top: 2px solid #317ee7; }
        .page-shopping-cart .cart-title {
            color: #317ee7;
            font-size: 16px;
            text-align: left;
            padding-left: 20px;
            line-height: 68px; }
        .page-shopping-cart .red-text {
            color: #e94826; }
        .page-shopping-cart .check-span {
            display: block;
            width: 24px;
            height: 20px;
            background: url("shopping_cart.png") no-repeat 0 0; }
        .page-shopping-cart .check-span.check-true {
            background: url("shopping_cart.png") no-repeat 0 -22px; }
        .page-shopping-cart .td-check {
            width: 70px; }
        .page-shopping-cart .td-product {
            width: 460px; }
        .page-shopping-cart .td-num, .page-shopping-cart .td-price, .page-shopping-cart .td-total {
            width: 160px; }
        .page-shopping-cart .td-do {
            width: 150px; }
        .page-shopping-cart .cart-product-title {
            text-align: center;
            height: 38px;
            line-height: 38px;
            padding: 0 20px;
            background: #f7f7f7;
            border-top: 1px solid #e3e3e3;
            border-bottom: 1px solid #e3e3e3; }
        .page-shopping-cart .cart-product-title .td-product {
            text-align: center;
            font-size: 14px; }
        .page-shopping-cart .cart-product-title .td-check {
            text-align: left; }
        .page-shopping-cart .cart-product-title .td-check .check-span {
            margin: 9px 6px 0 0; }
        .page-shopping-cart .cart-product {
            padding: 0 20px;
            text-align: center; }
        .page-shopping-cart .cart-product table {
            width: 100%;
            text-align: center;
            font-size: 14px; }
        .page-shopping-cart .cart-product table td {
            padding: 20px 0; }
        .page-shopping-cart .cart-product table tr {
            border-bottom: 1px dashed #e3e3e3; }
        .page-shopping-cart .cart-product table tr:last-child {
            border-bottom: none; }
        .page-shopping-cart .cart-product table .product-num {
            border: 1px solid #e3e3e3;
            display: inline-block;
            text-align: center; }
        .page-shopping-cart .cart-product table .product-num .num-do {
            width: 24px;
            height: 28px;
            display: block;
            background: #f7f7f7; }
        .page-shopping-cart .cart-product table .product-num .num-reduce span {
            background: url("shopping_cart.png") no-repeat -40px -22px;
            display: block;
            width: 6px;
            height: 2px;
            margin: 13px auto 0 auto; }
        .page-shopping-cart .cart-product table .product-num .num-add span {
            background: url("shopping_cart.png") no-repeat -60px -22px;
            display: block;
            width: 8px;
            height: 8px;
            margin: 10px auto 0 auto; }
        .page-shopping-cart .cart-product table .product-num .num-input {
            width: 42px;
            height: 28px;
            line-height: 28px;
            border: none;
            text-align: center; }
        .page-shopping-cart .cart-product table .td-product {
            text-align: left;
            font-size: 12px;
            line-height: 20px; }
        .page-shopping-cart .cart-product table .td-product img {
            border: 1px solid #e3e3e3;
            margin-right: 10px; }
        .page-shopping-cart .cart-product table .td-product .product-info {
            display: inline-block;
            vertical-align: middle; }
        .page-shopping-cart .cart-product table .td-do {
            font-size: 12px; }
        .page-shopping-cart .cart-product-info {
            height: 50px;
            line-height: 50px;
            background: #f7f7f7;
            padding-left: 20px; }
        .page-shopping-cart .cart-product-info .delect-product {
            color: #666; }
        .page-shopping-cart .cart-product-info .delect-product span {
            display: inline-block;
            vertical-align: top;
            margin: 18px 8px 0 0;
            width: 13px;
            height: 15px;
            background: url("shopping_cart.png") no-repeat -60px 0; }
        .page-shopping-cart .cart-product-info .product-total {
            font-size: 14px;
            color: #e94826; }
        .page-shopping-cart .cart-product-info .product-total span {
            font-size: 20px; }
        .page-shopping-cart .cart-product-info .check-num {
            color: #333; }
        .page-shopping-cart .cart-product-info .check-num span {
            color: #e94826; }
        .page-shopping-cart .cart-product-info .keep-shopping {
            color: #666;
            margin-left: 40px; }
        .page-shopping-cart .cart-product-info .keep-shopping span {
            display: inline-block;
            vertical-align: top;
            margin: 18px 8px 0 0;
            width: 15px;
            height: 15px;
            background: url("shopping_cart.png") no-repeat -40px 0; }
        .page-shopping-cart .cart-product-info .btn-buy {
            height: 50px;
            color: #fff;
            font-size: 20px;
            display: block;
            width: 110px;
            background: #ff7700;
            text-align: center;
            margin-left: 30px; }
        .page-shopping-cart .cart-worder {
            padding: 20px; }
        .page-shopping-cart .cart-worder .choose-worder {
            color: #fff;
            display: block;
            background: #39e;
            width: 140px;
            height: 40px;
            line-height: 40px;
            border-radius: 4px;
            text-align: center;
            margin-right: 20px; }
        .page-shopping-cart .cart-worder .choose-worder span {
            display: inline-block;
            vertical-align: top;
            margin: 9px 10px 0 0;
            width: 22px;
            height: 22px;
            background: url("shopping_cart.png") no-repeat -92px 0; }
        .page-shopping-cart .cart-worder .worker-info {
            color: #666; }
        .page-shopping-cart .cart-worder .worker-info img {
            border-radius: 100%;
            margin-right: 10px; }
        .page-shopping-cart .cart-worder .worker-info span {
            color: #000; }

        .choose-worker-box {
            width: 620px;
            background: #fff; }
        .choose-worker-box .box-title {
            height: 40px;
            line-height: 40px;
            background: #F7F7F7;
            text-align: center;
            position: relative;
            font-size: 14px; }
        .choose-worker-box .box-title a {
            display: block;
            position: absolute;
            top: 15px;
            right: 16px;
            width: 10px;
            height: 10px;
            background: url("shopping_cart.png") no-repeat -80px 0; }
        .choose-worker-box .box-title a:hover {
            background: url("shopping_cart.png") no-repeat -80px -22px; }
        .choose-worker-box .worker-list {
            padding-top: 30px;
            height: 134px;
            overflow-y: auto; }
        .choose-worker-box .worker-list li {
            float: left;
            width: 25%;
            text-align: center;
            margin-bottom: 30px; }
        .choose-worker-box .worker-list li p {
            margin-top: 8px; }
        .choose-worker-box .worker-list li.cur a {
            color: #f70; }
        .choose-worker-box .worker-list li.cur a img {
            border: 1px solid #f70; }
        .choose-worker-box .worker-list li a:hover {
            color: #f70; }
        .choose-worker-box .worker-list li a:hover img {
            border: 1px solid #f70; }
        .choose-worker-box .worker-list li img {
            border: 1px solid #fff;
            border-radius: 100%; }
    </style>
</head>
<body>
<div class="page-shopping-cart" id="shopping-cart">
    <h4 class="cart-title">购物清单</h4>
    <div class="cart-product-title clearfix">
        <div class="td-check fl"><span class="check-span fl check-all"></span>全选</div>
        <div class="td-product fl">商品</div>
        <div class="td-num fl">数量</div>
        <div class="td-price fl">单价(元)</div>
        <div class="td-total fl">金额(元)</div>
        <div class="td-do fl">操作</div>
    </div>
    <div class="cart-product clearfix">
        <table>
            <tbody><tr>
                <td class="td-check"><span class="check-span"></span></td>
                <td class="td-product"><img src="testimg.jpg" width="98" height="98">
                    <div class="product-info">
                        <h6>【斯文】甘油 | 丙三醇</h6>
                        <p>品牌：韩国skc  产地：韩国</p>
                        <p>规格/纯度:99.7%  起定量：215千克</p>
                        <p>配送仓储：上海仓海仓储</p>
                    </div>
                    <div class="clearfix"></div>
                </td>
                <td class="td-num">
                    <div class="product-num">
                        <a href="javascript:;" class="num-reduce num-do fl"><span></span></a>
                        <input type="text" class="num-input" value="3">
                        <a href="javascript:;" class="num-add num-do fr"><span></span></a>
                    </div>
                </td>
                <td class="td-price">
                    <p class="red-text">￥<span class="price-text">800</span>.00</p>
                </td>
                <td class="td-total">
                    <p class="red-text">￥<span class="total-text">800</span>.00</p>
                </td>
                <td class="td-do"><a href="javascript:;" class="product-delect">删除</a></td>
            </tr>
            <tr>
                <td class="td-check"><span class="check-span check-true"></span></td>
                <td class="td-product"><img src="testimg.jpg" width="98" height="98">
                    <div class="product-info">
                        <h6>【斯文】甘油 | 丙三醇</h6>
                        <p>品牌：韩国skc  产地：韩国</p>
                        <p>规格/纯度:99.7%  起定量：215千克</p>
                        <p>配送仓储：上海仓海仓储</p>
                    </div>
                    <div class="clearfix"></div>
                </td>
                <td class="td-num">
                    <div class="product-num">
                        <a href="javascript:;" class="num-reduce num-do fl"><span></span></a>
                        <input type="text" class="num-input" value="1">
                        <a href="javascript:;" class="num-add num-do fr"><span></span></a>
                    </div>
                </td>
                <td class="td-price">
                    <p class="red-text">￥<span class="price-text">800</span>.00</p>
                </td>
                <td class="td-total">
                    <p class="red-text">￥<span class="total-text">800</span>.00</p>
                </td>
                <td class="td-do"><a href="javascript:;" class="product-delect">删除</a></td>
            </tr>
            </tbody></table>
    </div>
    <div class="cart-product-info">
        <a class="delect-product" href="javascript:;"><span></span>删除所选商品</a>
        <a class="keep-shopping" href="#"><span></span>继续购物</a>
        <a class="btn-buy fr" href="javascript:;">去结算</a>
        <p class="fr product-total">￥<span>1600</span></p>
        <p class="fr check-num"><span>2</span>件商品总计（不含运费）：</p>
    </div>
    <div class="cart-worder clearfix">
        <a href="javascript:;" class="choose-worder fl"><span></span>绑定跟单员</a>
        <div class="worker-info fl">
        </div>
    </div>
</div>
</body>
<script src="vue.min.js"></script>
<script>
    new Vue({
        el:'#shopping-cart',
        data:{

        },
        computed: {},
        methods:{
            
        }
    })
</script>
</html>

productList:[
    {
        'pro_name': '【斯文】甘油 | 丙三醇',//产品名称
        'pro_brand': 'skc',//品牌名称
        'pro_place': '韩国',//产地
        'pro_purity': '99.7%',//规格
        'pro_min': "215千克",//最小起订量
        'pro_depot': '上海仓海仓储',//所在仓库
        'pro_num': 3,//数量
        'pro_img': '../../images/ucenter/testimg.jpg',//图片链接
        'pro_price': 800//单价
    }
]

准备了这么多，大家可能想到，还缺少一个，就是记录产品是否有选中，但是这个字段，虽然可以在上面那里加，但是意义不大，比如在平常项目那里！

后台的数据不会这样返回，数据库也不会有这个字段，这个字段应该是自己添加的。代码如下

new Vue({
    el:'#shopping-cart',
    data:{
        productList:[
            {
                'pro_name': '【斯文】甘油 | 丙三醇',//产品名称
                'pro_brand': 'skc',//品牌名称
                'pro_place': '韩国',//产地
                'pro_purity': '99.7%',//规格
                'pro_min': "215千克",//最小起订量
                'pro_depot': '上海仓海仓储',//所在仓库
                'pro_num': 3,//数量
                'pro_img': '../../images/ucenter/testimg.jpg',//图片链接
                'pro_price': 800//单价
            }
        ]
    },
    computed: {},
    methods:{

    },
    mounted:function () {
        //为productList添加select（是否选中）字段，初始值为true
        var _this=this;
        //为productList添加select（是否选中）字段，初始值为true
        this.productList.map(function (item) {
            _this.$set(item, 'select', true);
        })
        //要像上面这样写双向绑定才能起效，下面的写法是有问题的，双向绑定不起效的！
        //this.productList.map(function (item) {item.select=true})
    }
})

步骤一、点击增加和减少按钮（箭头指向地方），所属列的金额改变（红框地方）要先把列表的数据给铺出来。利用v-for指令。代码如下

<tr v-for="item in productList">
    <td class="td-check"><span class="check-span"></span></td>
    <td class="td-product"><img :src="item.pro_img" width="98" height="98">
        <div class="product-info">
            <h6>{{item.pro_name}}</h6>
            <p>品牌：{{item.pro_brand}}  产地：{{item.pro_place}}</p>
            <p>规格/纯度:{{item.pro_purity}}  起定量：{{item.pro_min}}</p>
            <p>配送仓储：{{item.pro_depot}}</p>
        </div>
        <div class="clearfix"></div>
    </td>
    <td class="td-num">
        <div class="product-num">
            <a href="javascript:;" class="num-reduce num-do fl" @click="item.pro_num--"><span></span></a>
            <input type="text" class="num-input" v-model="item.pro_num">
            <a href="javascript:;" class="num-add num-do fr" @click="item.pro_num++"><span></span></a>
        </div>
    </td>
    <td class="td-price">
        <p class="red-text">￥<span class="price-text">{{item.pro_price.toFixed(2)}}</span></p>
    </td>
    <td class="td-total">
        <p class="red-text">￥<span class="total-text">{{item.pro_price*item.pro_num}}</span>.00</p>
    </td>
    <td class="td-do"><a href="javascript:;" class="product-delect">删除</a></td>
</tr>

这两个按钮的功能已经实现了，后面的金额也会发生变化！是不是感到很惊喜！其实这里没什么特别的，就是因为输入框利用v-model绑定了数量（pro_num），然后两个按钮分别添加了事件@click="item.pro_num--"和@click="item.pro_num++"。

步骤2

点击所属列选择按钮（箭头指向地方），总计的金额（红框地方）和已选产品的列数（蓝框地方）和全选（黄框地方）会改变（如果已经全选了，全选按钮自动变成全选，如果没有全选，全选按钮，自动取消全选）！

首先，选择与取消选择，在这里只有两个操作（其实只有一个：改变这条记录的select字段）。

<td class="td-check"><span class="check-span" @click="item.select=!item.select" :class="{'check-true':item.select}"></span></td>

其实就是等于添加了@click="item.select=!item.select" :class="{'check-true':item.select}"这里。点击这个，这条数据的select字段就取反（true->false或者false->true）。然后:class="{'check-true':item.select}"，就会根据这条数据的select字段进行判断，是否添加check-true类名，如果select字段为true，就添加类名

全选按钮：

　　这里用一个computed（计算属性）就好。

html

<div class="td-check fl"><span class="check-span fl check-all" :class="{'check-true':isSelectAll}"></span>全选</div>

computed: {
    //检测是否全选
    isSelectAll:function(){
        //如果productList中每一条数据的select都为true，返回true，否则返回false;
        return this.productList.every(function (val) { return val.select});
    },
    //获取总价和产品总件数
    getTotal:function(){
        //获取productList中select为true的数据。
        var _proList=this.productList.filter(function (val) { return val.select}),totalPrice=0;
        for(var i=0,len=_proList.length;i<len;i++){
            //总价累加
            totalPrice+=_proList[i].pro_num*_proList[i].pro_price;
        }
        //选择产品的件数就是_proList.length，总价就是totalPrice
        return {totalNum:_proList.length,totalPrice:totalPrice}
    }
},

步骤3

点击全选按钮（箭头指向部分），会自动的对产品进行全选或者取消全选，下面的总计也会发生改变

做到这一步，大家应该知道，全选或者取消全选，就是改变记录的select。但是怎么知道现在的列表有没有全选呢？这个很贱，不需要在操作函数（全选与取消全选函数）里面遍历，大家应该还记得第二步的计算属性isSelectAll（为true就是全选，否则不是全选），把这个传进操作函数就好，然后操作函数，根据参数，决定执行全选，还是取消全选操作。代码如下！
html

<div class="td-check fl"><span class="check-span fl check-all" :class="{'check-true':isSelectAll}" @click="selectProduct(isSelectAll)"></span>全选</div>

methods: {
    //全选与取消全选
    selectProduct:function(_isSelect){
        //遍历productList，全部取反
        for (var i = 0, len = this.productList.length; i < len; i++) {
            this.productList[i].select = !_isSelect;
        }
    }
},

步骤4

点击删除产品，会删除已经选中的，全选按钮和下面的总计，都会变化！点击每条记录后面的删除，会删除当前的这条记录。全选按钮和下面的总计，也都会变化！

首先，点击删除产品，删除已经选中。这个大家知道了怎么做了！就是遍历productList，如果哪条记录的select为true，就删除。
然后，点击每条记录后面的删除，删除当前的这条记录。这个在html遍历productList的时候。顺便带上索引，然后把索引当成参数，传进操作函数，然后根据索引参数，删除productList的哪一条记录。即可实现！代码如下！
html

<!--遍历的时候带上索引-->
<tr v-for="(item,index) in productList">
    <td class="td-check"><span class="check-span" @click="item.select=!item.select" :class="{'check-true':item.select}"></span></td>
    <td class="td-product"><img :src="item.pro_img" width="98" height="98">
        <div class="product-info">
            <h6>{{item.pro_name}}</h6>
            <p>品牌：{{item.pro_brand}}  产地：{{item.pro_place}}</p>
            <p>规格/纯度:{{item.pro_purity}}  起定量：{{item.pro_min}}</p>
            <p>配送仓储：{{item.pro_depot}}</p>
        </div>
        <div class="clearfix"></div>
    </td>
    <td class="td-num">
        <div class="product-num">
            <a href="javascript:;" class="num-reduce num-do fl" @click="item.pro_num--"><span></span></a>
            <input type="text" class="num-input" v-model="item.pro_num">
            <a href="javascript:;" class="num-add num-do fr" @click="item.pro_num++"><span></span></a>
        </div>
    </td>
    <td class="td-price">
        <p class="red-text">￥<span class="price-text">{{item.pro_price.toFixed(2)}}</span></p>
    </td>
    <td class="td-total">
        <p class="red-text">￥<span class="total-text">{{item.pro_price*item.pro_num}}</span>.00</p>
    </td>
    <td class="td-do"><a href="javascript:;" class="product-delect" @click="deleteOneProduct(index)">删除</a></td>
</tr>
...
<a class="delect-product" href="javascript:;" @click="deleteProduct"><span></span>删除所选商品</a>

//删除已经选中(select=true)的产品
deleteProduct:function () {
    this.productList=this.productList.filter(function (item) {return !item.select})
},
//删除单条产品
deleteOneProduct:function (index) {
    //根据索引删除productList的记录
    this.productList.splice(index,1);
},

按钮图片：

完整代码

<style>
.fl{
  float: left;
}
.fr{
  float: right;
}
blockquote, body, dd, div, dl, dt, fieldset, form, h1, h2, h3, h4, h5, h6, img, input, li, ol, p, table, td, textarea, th, ul {
  margin: 0;
  padding: 0;
}
.clearfix{
  zoom: 1;
}
.clearfix:after {
  clear: both;
}
.clearfix:after {
  content: '.';
  display: block;
  overflow: hidden;
  visibility: hidden;
  font-size: 0;
  line-height: 0;
  width: 0;
  height: 0;
}
a{
  text-decoration: none;
  color: #333;
}
img{vertical-align: middle;}
.page-shopping-cart{
  width: 1200px;
  margin:50px auto;
  font-size: 14px;
  border:1px solid #e3e3e3;
  border-top:2px solid #317ee7;
}
.page-shopping-cart .cart-title{
  color:#317ee7;
  font-size: 16px;
  text-align: left;
  padding-left: 20px;
  line-height: 68px;
}
.page-shopping-cart .red-text {
  color: #e94826;
}
.page-shopping-cart .check-span{
  display: block;
  width: 24px;
  height: 20px;
  margin-top: 9px;
  background: url("cartBg.png") no-repeat 0 0;
}

/* 点击时改变勾选 */
.page-shopping-cart .check-span.check-true{
  background: url('cartBg.png') no-repeat 0 -22px;
}
.page-shopping-cart .td-check{
  width:70px;
}
.page-shopping-cart .td-product{
  width:460px;
}
.page-shopping-cart .td-num, .page-shopping-cart .td-price, .page-shopping-cart .td-total{
  width:160px;
}
.page-shopping-cart .td-do{
  width:150px;
}
.cart-product-title{
  text-align: center;
  height: 38px;
  line-height: 38px;
  padding: 0 20px;
  background-color: #f7f7f7;
  border-top: 1px solid #e3e3e3;
  border-bottom: 1px solid #e3e3e3;
}
.cart-product-title .td-product{
  text-align: center;
  font-size: 14px;
}
.cart-product-title .td-check{
  text-align: left;
}
.cart-product-title .td-check .check-span .check-span{
  margin:9px 6px 0 0;
}

/* 内容开始 */
.cart-product{
  padding: 0 20px;
  text-align: center;
}
.cart-product table{
  width: 100%;
  text-align: center;
  font-size: 14px;
}
.cart-product table td{
  padding: 20px 0;
}
.cart-product table tr{
  border-bottom:1px dashed #e3e3e3;
}
.cart-product table tr:last-child{
  border-bottom:none;
}
.cart-product table .product-num{
  border: 1px solid #e3e3e3;
  display: inline-block;
  text-align: center;
}
.cart-product table .product-num .num-do{
  width: 24px;
  height: 28px;
  background: #f7f7f7;
  display: block;
}
.cart-product table .product-num .num-reduce span{
  display: block;
  width: 6px;
  height: 2px;
  margin:13px auto 0 auto;
  background: url("cartBg.png") no-repeat -40px -22px;
}
.cart-product table .product-num .num-add span{
  display: block;
  width: 8px;
  height: 8px;
  margin:10px auto 0 auto;
  background: url("cartBg.png") no-repeat -60px -22px;
}
.cart-product table .product-num .num-input{
  width: 42px;
  height: 28px;
  line-height:28px;
  border:none;
  text-align: center;
}
.cart-product table .td-product{
  text-align: center;
  font-size: 12px;
  line-height: 20px;
}
.cart-product table .td-product img{
  border:1px solid #e3e3e3;
  margin-right: 10px;
}
.cart-product table .td-product .product-info{
  display: inline-block;
  vertical-align: middle;
  text-align: left;
}
.cart-product table .td-do{
  font-size: 12px;
}

/* 最后一行统计 */

.cart-product-info{
  height:50px;
  line-height: 50px;
  background: #f7f7f7;
  padding-left: 20px;
}
.cart-product-info .delete-product{
  color:#666;
}
.cart-product-info .delete-product span{
  display: inline-block;
  vertical-align: top;
  margin:18px 8px 0 0;
  width:13px;
  height: 15px;
  background: url("cartBg.png") no-repeat -60px 0;
}
.cart-product-info .product-total{
  font-size: 14px;
  color:#e94826;
}
.cart-product-info .product-total span{
  font-size: 20px;
}
.cart-product-info .check-num{
  color:#333;
}
.cart-product-info .check-num span{
  color: #e94826;
}
.cart-product-info .keep-shopping{
  color: #666;
  margin-left: 40px;
}
.cart-product-info .keep-shopping span{
  display: inline-block;
  vertical-align: top;
  margin:18px 8px 0 0;
  width: 15px;
  height: 15px;
  background: url("cartBg.png") no-repeat -40px 0;
}
.cart-product-info .btn-buy{
  height: 50px;
  color: #fff;
  font-size: 20px;
  display: block;
  width: 110px;
  background: #ff7700;
  text-align: center;
  margin-left: 30px;
}



/* cart-worder */

.page-shopping-cart .cart-worder {
    padding: 20px; }
.page-shopping-cart .cart-worder .choose-worder {
    color: #fff;
    display: block;
    background: #39e;
    width: 140px;
    height: 40px;
    line-height: 40px;
    border-radius: 4px;
    text-align: center;
    margin-right: 20px; }
.page-shopping-cart .cart-worder .choose-worder span {
    display: inline-block;
    vertical-align: top;
    margin: 9px 10px 0 0;
    width: 22px;
    height: 22px;
    background: url("cartBg.png") no-repeat -92px 0; }
.page-shopping-cart .cart-worder .worker-info {
    color: #666; }
.page-shopping-cart .cart-worder .worker-info img {
    border-radius: 100%;
    margin-right: 10px; }
.page-shopping-cart .cart-worder .worker-info span {
    color: #000; }

.choose-worker-box {
    width: 620px;
    background: #fff; }
.choose-worker-box .box-title {
    height: 40px;
    line-height: 40px;
    background: #F7F7F7;
    text-align: center;
    position: relative;
    font-size: 14px; }
.choose-worker-box .box-title a {
    display: block;
    position: absolute;
    top: 15px;
    right: 16px;
    width: 10px;
    height: 10px;
    background: url("shopping_cart.png") no-repeat -80px 0; }
.choose-worker-box .box-title a:hover {
    background: url("shopping_cart.png") no-repeat -80px -22px; }
.choose-worker-box .worker-list {
    padding-top: 30px;
    height: 134px;
    overflow-y: auto; }
.choose-worker-box .worker-list li {
    float: left;
    width: 25%;
    text-align: center;
    margin-bottom: 30px; }
.choose-worker-box .worker-list li p {
    margin-top: 8px; }
.choose-worker-box .worker-list li.cur a {
    color: #f70; }
.choose-worker-box .worker-list li.cur a img {
    border: 1px solid #f70; }
.choose-worker-box .worker-list li a:hover {
    color: #f70; }
.choose-worker-box .worker-list li a:hover img {
    border: 1px solid #f70; }
.choose-worker-box .worker-list li img {
    border: 1px solid #fff;
    border-radius: 100%; }
</style>
<!-- 购物车 -->
<div id="shopping-cart" class="page-shopping-cart">
    <h4 class="cart-title">购物清单</h4>
    <!-- 标题 -->
    <div class="cart-product-title clearfix">
        <div class="td-check fl">
            <!-- 当切换到check-true类名时就调用全选函数 -->
            <span class="check-span fl check-all" :class="{'check-true':isSelectAll}"
              @click="selectProduct(isSelectAll)"></span>  <!-- 选择框 -->
            全选
        </div>
        <div class="td-product fl">商品</div>
        <div class="td-num fl">数量</div>
        <div class="td-price fl">单价(元)</div>
        <div class="td-total fl">金额(元)</div>
        <div class="td-do fl">操作</div>
    </div>

    <!-- 内容 -->
    <div class="cart-product clearfix">
      <table>
        <tbody>
          <tr v-for='(item,index) in productList'>
            <td class="td-check">
              <span class="check-span" @click='item.select=!item.select' :class="{'check-true':item.select}"></span>
            </td>
            <td class="td-product">
                <img :src="item.pro_img" width="98" height="98" alt="">
                <div class="product-info">
                  <h6>{{item.pro_name}}</h6>
                  <p>品牌：{{item.pro_brand}}  {{item.pro_place}}</p>
                  <p>规格/纯度:{{item.pro_purity}}  起定量：{{item.pro_min}}</p>
                  <p>配送仓储：{{item.pro_depot}}</p>
                </div>
                <div class="clearfix"></div>
            </td>
            <td class="td-num">
                <div class="product-num">
                  <a href="javascript:;" class="num-reduce num-do fl" @click='item.pro_num--'><span></span></a>
                  <input type="text" class="num-input" v-model='item.pro_num'>
                  <a href="javascript:;" class="num-add num-do fr" @click='item.pro_num++'><span></span></a>
                </div>
            </td>
            <td class="td-price">
              <p class="red-text">￥<span class="price-text">{{item.pro_price.toFixed(2)}}</span>.00</p>
            </td>
            <td class="td-total">
              <p class="red-text">￥<span class="price-text">{{item.pro_price*item.pro_num}}</span>.00</p>
            </td>
            <td class="td-do">
              <a href="javascript:;" class="product-delete" @click='deleteOneProduct(index)'>删除</a>
            </td>
          </tr>

        </tbody>
      </table>
    </div>

    <!-- 最后一行统计 -->
    <div class="cart-product-info">
        <a href="javascript:;" class="delete-product" @click='deleteProduct'><span></span>删除所选商品</a>
        <a href="#" class="keep-shopping"><span></span>继续购物</a>
        <a href="javascript:;" class="fr btn-buy">去结算</a>
        <a href="javascript:;" class="fr product-total">￥<span>{{getTotal.totalPrice}}</span></a>
        <a href="javascript:;" class="fr check-num"><span>{{getTotal.totalNum}}</span>件商品总计（不含运费）:</a>
    </div>

    <div class="cart-worder clearfix">
       <a href="javascript:;" class="choose-worder fl"><span></span>绑定跟单员</a>
       <div class="worker-info fl">
       </div>
   </div>
</div>

<script src="https://unpkg.com/vue"></script>


<script type="text/javascript">
  new Vue({
    el:'#shopping-cart',
    data:{
      productList:[
        {
          'pro_name':'【斯文】甘油|丙三醇',
          'pro_brand':'skc',
          'pro_place':'韩国',
          'pro_purity':'99.7%',
          'pro_min':'215千克',
          'pro_depot':'上海沧海仓储',
          'pro_num':3,
          'pro_img':'testimg.jpg',
          'pro_price': 800
        },
        {
          'pro_name':'【斯文】甘油|丙三醇',
          'pro_brand':'skc',
          'pro_place':'韩国',
          'pro_purity':'99.7%',
          'pro_min':'215千克',
          'pro_depot':'上海沧海仓储',
          'pro_num':1,
          'pro_img':'testimg.jpg',
          'pro_price': 700
        },
        {
          'pro_name':'【斯文】甘油|丙三醇',
          'pro_brand':'skc',
          'pro_place':'韩国',
          'pro_purity':'99.7%',
          'pro_min':'215千克',
          'pro_depot':'上海沧海仓储',
          'pro_num':1,
          'pro_img':'testimg.jpg',
          'pro_price': 600
        }
      ]
    },
    computed:{
      // 检测是否全选
      isSelectAll:function(){
          //如果productList中每一条数据的select都为true,就返回true,否则返回false
        return this.productList.every(function(val){return  val.select})
      },

    // 获取总价和产品总数
      getTotal:function(){
        // 获取list中select为true的数据
        var _proList = this.productList.filter(function(val){return val.select}),
        totalPrice = 0;
        for (var i = 0; i < _proList.length; i++) {
          // 总价累加
          totalPrice += _proList[i].pro_num * _proList[i].pro_price;
        }
        // 选择产品的件数就是_proList.lenth，总价就是totalPrice
        return{totalNum:_proList.length,totalPrice:totalPrice}
      }

    },
    methods:{
      // 全选与取消全选
      selectProduct:function(_isSelect){
        //遍历productList,全部取反
        for (var i = 0; i < this.productList.length; i++) {
          this.productList[i].select = !_isSelect
        }
      },

      //删除选中的产品
      deleteProduct:function(){
        this.productList =this.productList.filter(function(item){return !item.select})
      },

      //删除单条产品
      deleteOneProduct:function(index){
        //根据索引删除productList的记录
        this.productList.splice(index,1);
      },
    },
    mounted:function(){
      //为productList添加select（是否选中字段，初始值为true）
      var _this=this;
      this.productList.map(function(item){    //map:'键值对'
        _this.$set(item,'select',true)      //往item添加select属性，默认为true
      })
    }
  })
</script>

转自：https://segmentfault.com/a/1190000010801357#articleHeader6 （守候）

posted @ 2020-10-30 10:29 我自是年少阅读(2119) 评论(0) 编辑收藏举报

刷新页面返回顶部

我自是年少

韶华倾负

vue实现购物车功能

原理分析和实现

步骤2

步骤3

步骤4

完整代码

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