Function addColumnLeft

notes.js:303–315

(table, colIndex)

    }
    
    function addColumnLeft(table, colIndex) {
        Array.from(table.rows).forEach((row, rowIdx) => {
            const cell = row.insertCell(colIndex);
            if (rowIdx === 0 && row.children[colIndex + 1] && row.children[colIndex + 1].tagName === 'TH') {
                const th = document.createElement('th');
                th.style.cssText = 'padding: 12px; border: 1px solid #e5e7eb; background: #f8fafc; font-weight: 600; text-align: left; color: #374151;';
                th.textContent = '新列';
                row.replaceChild(th, cell);
            } else {
                cell.style.cssText = 'padding: 12px; border: 1px solid #e5e7eb; color: #374151; min-height: 20px;';
            }
        });
    }
    
    function addColumnRight(table, colIndex) {
        Array.from(table.rows).forEach((row, rowIdx) => {