Unseen cells and sift through information in datatables

I encountered an issue with the data table while trying to display data from a database using AJAX and applying filters through a PHP file. The initial setup works smoothly, however, I faced a problem after implementing a column hiding feature which caused issues with filtering by certain fields.

Uncaught TypeError: Cannot read property 'value' of null at getPage (test.php?login=yes:2030) at run (test.php?login=yes:2002) at HTMLButtonElement.onclick (test.php?login=yes:2425)

// JavaScript function for handling data retrieval based on user inputs
function getPage() {
    // Variable declarations for various form values
    var odTermin = document.getElementById("odTermin").value;
    var doTermin = document.getElementById("doTermin").value;
    ...
}

// Initial data retrieval using jQuery AJAX call
$('document').ready(function () {
    $.ajax({
        type: 'POST',
        url: 'ajaxfile.php',
        dataType: 'json',
        data: {...},
        cache: false,
        success: function (result) {
            if (result == null){
                alert('No orders for this date!');
            } else {
                // Data manipulation and rendering logic goes here
                console.log(result);
                ...
                
                // DataTable initialization and customization
                var table = $('#example').DataTable({...});
                    
                $('.toggle-vis').on('click', function (e) {
                    // Toggle visibility of columns in the DataTable
                    var column = table.column($(this).attr('data-column'));
                    column.visible(!column.visible());
                });
            }
        }
    });
});

Answer №1

I finally understand the reasoning behind this approach. It turns out I simply forgot to tick off the checkbox.

Here's how it should be done:

if($("#firma").is(":visible"))
    var company = document.getElementById("firma").value;

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