export html table to excel javascript example

<div class="container">
        <h1>Employee Data</h1>
        <p class="subtitle">Export your data to Excel with one click</p>
        
        <button class="export-btn" onclick="exportToExcel()">
            📊 Export to Excel
        </button>

        <div class="table-wrapper">
            <table id="dataTable">
                <thead>
                    <tr>
                        <th>ID</th>
                        <th>Name</th>
                        <th>Department</th>
                        <th>Position</th>
                        <th>Salary</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td>001</td>
                        <td>John Smith</td>
                        <td>Engineering</td>
                        <td>Senior Developer</td>
                        <td>$95,000</td>
                    </tr>
                    <tr>
                        <td>002</td>
                        <td>Sarah Johnson</td>
                        <td>Marketing</td>
                        <td>Marketing Manager</td>
                        <td>$85,000</td>
                    </tr>
                    <tr>
                        <td>003</td>
                        <td>Michael Chen</td>
                        <td>Engineering</td>
                        <td>DevOps Engineer</td>
                        <td>$90,000</td>
                    </tr>
                    <tr>
                        <td>004</td>
                        <td>Emily Davis</td>
                        <td>Sales</td>
                        <td>Sales Representative</td>
                        <td>$70,000</td>
                    </tr>
                    <tr>
                        <td>005</td>
                        <td>Robert Wilson</td>
                        <td>Finance</td>
                        <td>Financial Analyst</td>
                        <td>$80,000</td>
                    </tr>
                </tbody>
            </table>
        </div>
    </div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.18.5/xlsx.full.min.js"></script>

   * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #E9D66B 0%, #d4c05a 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .container {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            padding: 40px;
            max-width: 900px;
            width: 100%;
        }

        h1 {
            color: #333;
            margin-bottom: 10px;
            font-size: 28px;
        }

        .subtitle {
            color: #666;
            margin-bottom: 30px;
            font-size: 14px;
        }

        .export-btn {
            background: linear-gradient(135deg, #E9D66B 0%, #d4c05a 100%);
            color: #333;
            border: none;
            padding: 12px 30px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            margin-bottom: 20px;
        }

        .export-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(233, 214, 107, 0.4);
        }

        .export-btn:active {
            transform: translateY(0);
        }

        .table-wrapper {
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid #e0e0e0;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            background: white;
        }

        thead {
            background: linear-gradient(135deg, #E9D66B 0%, #d4c05a 100%);
        }

        th {
            padding: 15px;
            text-align: left;
            font-weight: 600;
            color: #333;
            border-bottom: 2px solid #d4c05a;
        }

        td {
            padding: 12px 15px;
            border-bottom: 1px solid #f0f0f0;
            color: #555;
        }

        tbody tr:hover {
            background-color: #fafafa;
        }

        tbody tr:last-child td {
            border-bottom: none;
        }

        @media (max-width: 600px) {
            .container {
                padding: 20px;
            }

            h1 {
                font-size: 24px;
            }

            table {
                font-size: 14px;
            }

            th, td {
                padding: 10px;
            }
        }

   function exportToExcel() {
            const table = document.getElementById('dataTable');
            const wb = XLSX.utils.table_to_book(table, {sheet: "Employee Data"});
            XLSX.writeFile(wb, 'employee_data.xlsx');
        }