SOURCE

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>九九乘法表</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft Yahei", sans-serif;
        }
        body {
            background-color: #f0f8ff;
            padding: 40px 10px;
        }
        h1 {
            text-align: center;
            color: #2c3e50;
            margin-bottom: 30px;
        }
        .table-wrap {
            width: fit-content;
            margin: 0 auto;
        }
        table {
            border-collapse: collapse;
        }
        td {
            border: 1px solid #3498db;
            padding: 10px 12px;
            text-align: center;
            color: #2c3e50;
            background-color: #fff;
        }
        td:hover {
            background-color: #d6eaf8;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <h1>九九乘法表</h1>
    <div class="table-wrap">
        <table id="mulTable"></table>
    </div>
    <script>
        const table = document.getElementById('mulTable');
        for(let i = 1; i <= 9; i++){
            const tr = document.createElement('tr');
            for(let j = 1; j <= i; j++){
                const td = document.createElement('td');
                td.innerText = `${j}×${i}=${i*j}`;
                tr.appendChild(td);
            }
            table.appendChild(tr);
        }
    </script>
</body>
</html>