getValue = function(cell, processedValue) {
    const obj = this;

    let x;
    let y;

    if (typeof cell !== 'string') {
        return null;
    }

    cell = getIdFromColumnName(cell, true);
    x = cell[0];
    y = cell[1];

    let value = null;

    if (x != null && y != null) {
        if (obj.records[y] && obj.records[y][x] && processedValue) {
            value = obj.records[y][x].element.innerHTML;
        } else {
            if (obj.options.data[y] && obj.options.data[y][x] != 'undefined') {
                value = obj.options.data[y][x];
            }
        }
    }

    return value;
}
Get the value from a cell

@param object cell
@return string value