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fundamentals-of-java-script
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20231227

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <style>
        table{
            margin: auto;
            text-align: center;
            height: 100px;
            width: 500px;
            border: solid;
        }
        h1{
            text-align: center;
        }
    </style>

    <script>
     alert('请输入内容');

     let a1=prompt('请输入银行卡总额: ');

     let a2=prompt('请输入水费: ');

     let a3=prompt('请输入电费: ');

     let a4=prompt('请输入网费：');

     let a5=a1-a2-a3-a4;


    </script>

    <table border="1" color="black">
        <h1>10月份消费记录</h1>
    <tr>
        <td>银行卡总额</td>
        <td>水费</td>
        <td>电费</td>
        <td>网费</td>
        <td>余额</td>
    </tr>
    <tr>
        <td><script>document.write(a1)</script></td>
        <td><script>document.write(a2)</script></td>
        <td><script>document.write(a3)</script></td>
        <td><script>document.write(a4)</script></td>
        <td><script>document.write(a5)</script></td>
    </tr>
</table>

</body>
</html>