<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="box">
<table border="1" cellspacing="0" cellpadding="10">
<tbody>
<tr>
<td class="all"><input type="checkbox"></td>
<td>名称</td>
<td>单价</td>
<td>颜色</td>
<td>重量</td>
<td>减少</td>
<td>数量</td>
<td>增加</td>
<td>总价</td>
<td>操作</td>
</tr>
<tr>
<td class="checked"><input type="checkbox"></td>
<td>小米手机</td>
<td class="price">1500</td>
<td>黑色</td>
<td>0.5kg </td>
<td class="btn">-</td>
<td class="number"> <input type="text" value="2" style="width:20px;"> </td>
<td class="btn">+</td>
<td class="totle">3000</td>
<td class="delete">删除</td>
</tr>
<tr>
<td class="checked"><input type="checkbox"></td>
<td>华为手机</td>
<td class="price">1698</td>
<td>蓝色</td>
<td>0.45kg </td>
<td class="btn">-</td>
<td class="number"> <input type="text" value="2" style="width:20px;"> </td>
<td class="btn">+</td>
<td class="totle">5094</td>
<td class="delete">删除</td>
</tr>
<tr>
<td class="checked"><input type="checkbox"></td>
<td>iphoneX</td>
<td class="price">7899</td>
<td>红色</td>
<td>0.6kg</td>
<td class="btn">-</td>
<td class="number"> <input type="text" value="2" style="width:20px;"> </td>
<td class="btn">+</td>
<td class="totle">55293</td>
<td class="delete">删除</td>
</tr>
</tbody>
</table>
</div>
<h3>所有商品合计: 0元</h3>
JavaScript依据已知代码实现购物车系统,实现加减、删除、小计、总计
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1条回答 默认 最新
- CSDN专家-showbo 2021-09-11 15:18关注
题主要的代码如下,有帮助
有帮助麻烦点个采纳【本回答右上角】,谢谢~~有其他问题可以继续交流~<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <div id="box"> <table border="1" cellspacing="0" cellpadding="10"> <tbody> <tr> <td class="all"><input type="checkbox"></td> <td>名称</td> <td>单价</td> <td>颜色</td> <td>重量</td> <td>减少</td> <td>数量</td> <td>增加</td> <td>总价</td> <td>操作</td> </tr> <tr> <td class="checked"><input type="checkbox"></td> <td>小米手机</td> <td class="price">1500</td> <td>黑色</td> <td>0.5kg </td> <td class="btn">-</td> <td class="number"> <input type="text" value="2" style="width:20px;"> </td> <td class="btn">+</td> <td class="totle">3000</td> <td class="delete">删除</td> </tr> <tr> <td class="checked"><input type="checkbox"></td> <td>华为手机</td> <td class="price">1698</td> <td>蓝色</td> <td>0.45kg </td> <td class="btn">-</td> <td class="number"> <input type="text" value="1" style="width:20px;"> </td> <td class="btn">+</td> <td class="totle">1698</td> <td class="delete">删除</td> </tr> <tr> <td class="checked"><input type="checkbox"></td> <td>iphoneX</td> <td class="price">7899</td> <td>红色</td> <td>0.6kg</td> <td class="btn">-</td> <td class="number"> <input type="text" value="2" style="width:20px;"> </td> <td class="btn">+</td> <td class="totle">15798</td> <td class="delete">删除</td> </tr> </tbody> </table> </div> <h3>所有商品合计: <span id="tl">0</span>元</h3> <script src="https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.js"></script> <script> $('td.btn').click(function () { var op = this.innerText, ipt = $(this)[op == '-' ? 'next' : 'prev']().find('input'), v = parseInt(ipt.val()); v += op == '-' ? -1 : 1; if (v < 0) v = 0; ipt.val(v); var tr = ipt.closest('tr'); tr.find('td.totle').html(v * parseFloat(tr.find('.price').text())); getTotal(); }) $('td.delete').click(function () { if (confirm('确认删除?')) { $(this).closest('tr').remove(); checkboxs = $('#box :checkbox'); getTotal(); } }); var checkboxs = $('#box :checkbox').change(function () { var el = $(this) if (el.parent().attr('class') == 'all') { checkboxs.not(this).prop('checked', this.checked); } else { checkboxs.eq(0).prop('checked', checkboxs.parent().filter(':not(.all)').find(':checkbox').filter(':checked').length == checkboxs.length - 1); } getTotal(); }); function getTotal() { var sum = 0; checkboxs.parent().filter(':not(.all)').find(':checkbox').filter(':checked').closest('tr').each(function () { sum += parseFloat($(this).find('.totle').text()) }) $('#tl').html(sum); } </script>
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