JavaScript购物车的实现

直接上代码

一、html主体部分

 <div class="wrapper">
        <nav>
            <img src="./img/dd_logo.jpg" alt="">
            <span id="close" onclick=" window.close()">关闭</span>
        </nav>
        <table>
          <thead>
            <tr >
                <td>商品图片</td>
                <td>商品信息</td>
                <td>单价</td>
                <td>数量</td>
                <td>总价</td>
                <td>操作</td>
            </tr>
          </thead>
           <tbody>
            <tr>
                <td><img src="./img/dog.jpg" alt=""></td>
                <td>我和狗狗活下来了</td>
                <td>21.00</td>
                <td>
                    <button class="cal">-</button>
                    <