js 实现完整版淘宝购物车

た入场券 2023-01-09 15:32 234阅读 0赞

# 功能分析： #

1、实现单选和全选

2、实现商品数量的加减和输入，小计金额和总件数也跟着发生改变，以及判断是否选中

3、实现选中商品金额总计

4、 可以删除商品，删除商品后的总件数以及已选择件数，和总金额的改变

5、可以加入购物车，加入购物车后的总件数的改变，以及拥有相应的功能

### 1、HTML相关代码 ###

<!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>小米购物车,打死不改</title>
        <link rel="stylesheet" href="https://at.alicdn.com/t/font_2329460_legvgzs3jvm.css">
        <script src="js/mi.js"></script>
        <link rel="stylesheet" href="css/mi.css">
    </head>
    
    <body>
        <div class="center">
            <table>
                <tbody class="tb">
                    <tr class="thead">
                        <td class="fist"><i class="iconfont icon-succ all"></i> 全选</td>
                        <td class="simg"></td>
                        <td class="shopName">商品名称</td>
                        <td class="price">单价</td>
                        <td class="number">数量</td>
                        <td class="count">小计</td>
                        <td class="op">操作</td>
                    </tr>
                </tbody>
            </table>
        </div>
        <div class="crta">
            <div class="c-left">
                <a href="#" class="back-shopping">继续购物</a>
                <span class="cart-total">共<i class="c-number">3</i> 件商品，已选择
                        <i class="g-number">0</i>件
                    </span>
            </div>
            <div class="total-price">
                <span>合计：<em>0</em>元</span>
                <div class="noTip">请勾选需要结算的商品</div>
                <a href="javascript:" class="close btn-disabled">去结算</a>
            </div>
        </div>
        <div class="content">
            <h2 class="shoptitle"><span class="title">买购物车中商品的人还买了</span></h2>
            <div class="shop-all">
                <ul class="shopList clearfix">
                </ul>
            </div>
        </div>
    
    </html>

### 2、css样式代码 ###

* {
        margin: 0;
        padding: 0;
    }
    
    a {
        text-decoration: none;
    }
    
    tr,
    td {
        box-sizing: border-box;
    }
    
    body {
        background-color: #f5f5f5;
    }
    
    .center {
        width: 1226px;
        margin: 0 auto;
        padding-top: 50px;
        margin-top: 100px;
        background-color: #fff;
        border-top: 2px solid #ff6700;
    }
    
    table {
        border-collapse: collapse;
    }
    
    .c {
        width: 110px;
    }
    
    .simg {
        width: 120px;
    }
    
    .icon-succ {
        display: inline-block;
        width: 18px;
        height: 18px;
        line-height: 18px;
        border: 1px solid #e0e0e0;
        margin-left: 24px;
        margin-right: 20px;
        background-color: #fff;
        color: #fff;
        font-size: 16px;
        text-align: center;
        vertical-align: middle;
        position: relative;
        top: -1px;
        cursor: pointer;
    }
    
    
    /* 悬停 */
    
    .icon-succ:hover {
        color: #757575;
    }
    
    table .tb .btn {
        background-color: #ff6700;
        color: #fff;
    }
    
    .thead {
        width: 1226px;
        height: 70px;
        color: #424242;
        font-size: 16px;
    }
    
    .thead tr {
        height: 70px;
    }
    
    .shopName {
        width: 380px;
    }
    
    .number {
        text-align: center;
        width: 150px;
    }
    
    .price {
        text-align: center;
        width: 158px;
    }
    
    .count {
        text-align: center;
        width: 201px;
        box-sizing: border-box;
    }
    
    .op {
        text-align: center;
        width: 80px;
    }
    
    
    /* tr边框 */
    
    .tlist {
        padding: 15px 26px 15px 0;
        border-top: 1px solid #e0e0e0;
        height: 117px;
        box-sizing: border-box;
    }
    
    
    /*计数框 */
    
    .nu {
        border: 1px solid #e0e0e0;
        height: 38px;
        width: 100%;
        display: flex;
        text-align: center;
        justify-content: space-between;
        position: relative;
    }
    
    .nu .msg {
        position: absolute;
        width: 100%;
        left: 0;
        bottom: -24px;
        font-size: 12px;
        color: #b0b0b0;
        display: none;
    }
    
    
    /* 加减 */
    
    .nu span {
        font-size: 12px;
        width: 40px;
        height: 38px;
        font-weight: bold;
        display: inline-block;
        line-height: 40px;
    }
    
    .nu span:hover {
        background-color: #e0e0ee;
        transition: all 0.3s;
    }
    
    .numbers {
        margin-right: 40px;
    }
    
    
    /*  */
    
    .shopNumber {
        width: 72px;
        height: 38px;
        line-height: 38px;
        padding: 0;
        border-width: 0;
        color: #424242;
        font-size: 16px;
        outline: none;
        text-align: center;
    }
    
    .clear::after {
        content: "";
        display: block;
        clear: both;
    }
    
    
    /* 文字说明 */
    
    .titles {
        font-size: 18px;
        font-weight: 400;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }
    
    
    /* 删除 */
    
    .ic {
        color: #ff6700;
    }
    
    .icon-X- {
        width: 24px;
        height: 24px;
        display: inline-block;
        line-height: 24px;
        border-radius: 12px;
        font-size: 12px;
        font-weight: bold;
        color: #757575;
        transition: all 0.3s;
    }
    
    .icon-X-:hover {
        color: #fff;
        background-color: #e53935;
    }
    
    
    /* 购物选项 */
    
    .crta {
        width: 1226px;
        height: 50px;
        margin: 0 auto;
        text-align: center;
        display: flex;
        background-color: #fff;
        justify-content: space-between;
        align-items: center;
        font-size: 14px;
        color: #757575;
        margin-top: 30px;
    }
    
    i {
        font-style: normal;
    }
    
    .c-left {
        height: 50px;
        font-size: 14px;
        color: #757575;
        text-align: center;
        display: flex;
        align-items: center;
    }
    
    
    /* 继续购物 */
    
    .c-left .back-shopping {
        height: 16px;
        margin-left: 32px;
        width: 56px;
        transition: color 0.3s;
        display: inline-block;
        font-size: 14px;
        color: #757575;
    }
    
    
    /* 悬停变色 */
    
    .c-left .back-shopping:hover {
        color: #ff6700;
    }
    
    .cart-total {
        margin-left: 16px;
        padding-left: 16px;
        border-left: 1px solid #eee;
        color: #757575;
        display: inline-block;
        box-sizing: border-box;
    }
    
    .cart-total i {
        color: #ff6700;
    }
    
    
    /* 合计 */
    
    .total-price {
        height: 50px;
        color: #ff6700;
        position: relative;
    }
    
    .total-price em {
        font-style: normal;
        font-size: 30px;
    }
    
    .total-price span {
        text-align: right;
        display: inline-block;
    }
    
    .total-price .close {
        width: 200px;
        height: 48px;
        display: inline-block;
        line-height: 48px;
        font-size: 18px;
        margin-left: 50px;
        vertical-align: top;
    }
    
    .btn-disabled {
        background: #e0e0e0;
        border-color: #e0e0e0;
        color: #b0b0b0;
        cursor: default;
    }
    
    .total-price .btn-close {
        padding-left: 13px;
        color: #ff6700;
        background: #ff6700;
        border-color: #ff6700;
        color: #fff;
    }
    
    
    /* 勾选 */
    
    .noTip {
        width: 200px;
        height: 48px;
        line-height: 48px;
        position: absolute;
        top: -58px;
        right: 0;
        background-color: #fff;
        border: 1px solid #ff6700;
        color: #ff6700;
        text-align: center;
    }
    
    .noTip::before {
        content: "";
        bottom: -8px;
        margin-left: -10px;
        border-width: 8px 10px 0;
        border-color: #ff6700 rgba(0, 0, 0, 0) rgba(0, 0, 0, 0);
        z-index: 1;
        display: block;
        width: 0px;
        height: 0px;
        border-style: solid dashed dashed;
        position: absolute;
        left: 50%;
    }
    
    .noTip::after {
        content: "";
        bottom: -7px;
        margin-left: -8px;
        border-width: 7px 8px 0;
        border-color: #fff rgba(0, 0, 0, 0) rgba(0, 0, 0, 0);
        z-index: 2;
        display: block;
        width: 0px;
        height: 0px;
        border-style: solid dashed dashed;
        position: absolute;
        left: 50%;
    }
    
    
    /* 还买了模块 */
    
    .content {
        width: 1226px;
        margin: 0 auto;
        text-align: center;
        margin-top: 60px;
    }
    
    .shoptitle {
        position: relative;
        margin: 0;
        height: 50px;
        font-size: 30px;
        font-weight: 400;
        color: #757575;
        border-top: 1px solid #e0e0e0;
    }
    
    .title {
        position: absolute;
        top: -20px;
        left: 372px;
        height: 40px;
        width: 482px;
        line-height: 40px;
        text-align: center;
        display: block;
        background-color: #f5f5f5;
    }
    
    
    /* 商品列表 */
    
    .shop-all {
        width: 1226px;
        height: 628px;
    }
    
    .shopitem {
        float: left;
        width: 234px;
        height: 300px;
        padding: 0 20px;
        margin: 0 0 14px 14px;
        padding: 0;
        position: relative;
        overflow: hidden;
        list-style: none;
        background-color: #fff;
        text-align: center;
        color: #757575;
    }
    
    
    /* 商品列表 */
    
    .shopitem img {
        display: block;
        margin: 40px auto 20px;
        width: 140px;
        height: 140px;
    }
    
    .shopList {
        margin: 0 0 0 -14px;
        height: 628px;
    }
    
    .shop-name {
        margin: 0 10px 10px;
        height: 18px;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
        color: #333;
    }
    
    .shop-price {
        margin-bottom: 10px;
        color: #ff6700;
    }
    
    .shop-tips {
        color: #757575;
        font-size: 14px;
    }
    
    .action {
        width: 118px;
        border: 1px solid #ff6700;
        background: #fff;
        color: #ff6700;
        height: 28px;
        position: absolute;
        left: 50%;
        height: 28px;
        font-size: 12px;
        line-height: 28px;
        margin-left: -64px;
        bottom: -40px;
        transition: all .3s;
    }
    
    .shopitem:hover .action {
        bottom: 15px;
    }
    
    .action:hover {
        background-color: #ff6700;
        color: #fff;
    }

### 3、js相关代码 ###