GridXcel/index.html at main · ProgrammerKR/GridXcel · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>GridXcel App</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet">
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f8f9fa;
        }

        .container {
            margin-top: 20px;
            overflow-x: auto;
        }

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

        td, th {
            width: 100px;
            height: 50px;
            border: 1px solid #dee2e6;
            text-align: center;
            vertical-align: middle;
            cursor: pointer;
            background-color: #ffffff;
        }

        input {
            width: 30px auto;
            padding: 5px;
            border: none;
            text-align: center;
            background-color: transparent;
        }

        .selected {
            background-color: #d0e0f0;
        }

        .formula-bar {
            margin-bottom: 15px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="formula-bar">
            <input type="text" id="formulaInput" class="form-control" placeholder="Enter a formula (e.g., =SUM(A1:A5))" />
        </div>
        <table id="excelTable" class="table table-bordered"></table>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js"></script>
    <script>
        const rows = 1200;
        const cols = 800;
        const table = document.getElementById('excelTable');
        const formulaInput = document.getElementById('formulaInput');

        // Initialize the table
        for (let i = 0; i < rows; i++) {
            const row = table.insertRow();
            for (let j = 0; j < cols; j++) {
                const cell = row.insertCell();
                const input = document.createElement('input');
                input.type = 'text';
                input.id = `cell-${i}-${j}`;
                input.addEventListener('input', updateCell);
                input.addEventListener('click', selectCell);
                cell.appendChild(input);
            }
        }

        function updateCell(event) {
            const input = event.target;
            let value = input.value.trim();

            if (value.startsWith('=') && value.length > 1) {
                input.value = evaluateFormula(value.slice(1));
            }
        }

        function selectCell(event) {
            document.querySelectorAll('input').forEach(cell => cell.classList.remove('selected'));
            event.target.classList.add('selected');
        }

        function evaluateFormula(formula) {
            try {
                if (formula.startsWith('SUM')) return calculateRange(formula, 'SUM');
                if (formula.startsWith('AVERAGE')) return calculateRange(formula, 'AVERAGE');
                if (formula.startsWith('MIN')) return calculateRange(formula, 'MIN');
                if (formula.startsWith('MAX')) return calculateRange(formula, 'MAX');
                return formula;
            } catch (error) {
                return 'ERROR';
            }
        }

        function calculateRange(formula, type) {
            const match = formula.match(/([A-Z]+)(\d+):([A-Z]+)(\d+)/);
            if (!match) return 'INVALID';

            const [_, col1, row1, col2, row2] = match;
            const startRow = parseInt(row1) - 1;
            const startCol = col1.charCodeAt(0) - 65;
            const endRow = parseInt(row2) - 1;
            const endCol = col2.charCodeAt(0) - 65;

            let values = [];
            for (let r = startRow; r <= endRow; r++) {
                for (let c = startCol; c <= endCol; c++) {
                    const cell = document.getElementById(`cell-${r}-${c}`);
                    if (cell) values.push(parseFloat(cell.value) || 0);
                }
            }

            if (type === 'SUM') return values.reduce((a, b) => a + b, 0);
            if (type === 'AVERAGE') return values.length ? (values.reduce((a, b) => a + b, 0) / values.length) : 0;
            if (type === 'MIN') return Math.min(...values);
            if (type === 'MAX') return Math.max(...values);

            return 'INVALID';
        }
    </script>
</body>
</html>