Readonly columns and cells.

Source code

<html>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jexcel/2.1.0/js/jquery.jexcel.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jexcel/2.1.0/css/jquery.jexcel.min.css" type="text/css" />
    
    <div id="my"></div>
    
    <script>
    let data = [
        ['Mazda', 2001, 2000, '2006-01-01'],
        ['Peugeot', 2010, 5000, '2005-01-01'],
        ['Honda Fit', 2009, 3000, '2004-01-01'],
        ['Honda CRV', 2010, 6000, '2003-01-01'],
    ];
    
    $('#my').jexcel({
        data:data,
        colHeaders: ['Description','Year','Price', 'Buy'],
        colWidths: [ 200, 300, 100, 100 ],
        columns: [
            { type: 'text', readOnly:true },
            { type: 'text', },
            { type: 'text', },
            { type: 'checkbox' },
        ]
    });
    
    //Set readonly a specific column
    $('#my').jexcel('updateSettings', {
        cells: function (cell, col, row) {
            // If the column is number 4 or 5
            if (row == 2 && col == 2) {
                $(cell).addClass('readonly');
            }
        }
    });
    </script>
</html>
Online demo on jsFiddle

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