Hi, at WebGurukul, our DataTable won’t filter by course. Help? Code: abc123

Hi everyone,

We at WebGurukul, an IT training and placement institute in Nagpur (check us out at www.webgurukul.org), are working on a project where we’ve integrated DataTables to manage student data dynamically on our website. However, we’re running into an issue with the table not rendering properly after implementing a custom search filter.

Link to test case:

Unfortunately, I don’t have a live test case yet as this is hosted locally for now, but I’ve replicated the issue in a simplified version. I’d be happy to provide more details if needed.

Debugger code (debug.datatables.net):

I’ve run the DataTables debugger, and the code is: abc123 (example code – please replace with the actual code after running the debugger).

Error messages shown:

No explicit error messages appear in the console, but the table fails to display any data after applying the custom search filter.

Description of problem:

We’re using DataTables to display a list of student records (e.g., name, course, status) fetched via AJAX. The basic implementation works fine, but when we added a custom search input to filter by course name, the table stops updating. Here’s a snippet of the code we’re using:

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$(document).ready(function() {
$('#studentTable').DataTable({
ajax: 'data/student_data.json',
columns: [
{ data: 'name' },
{ data: 'course' },
{ data: 'status' }
]
});

$('#courseFilter').on('keyup', function() {
    $('#studentTable').DataTable().column(1).search(this.value).draw();
});

});
The table loads initially, but typing in the #courseFilter input doesn’t filter the results as expected—it just shows an empty table. Are we missing something in the configuration? Any help would be appreciated! At WebGurukul (www.webgurukul.org), we’re teaching students tools like DataTables, so solving this would also help our training demos.

Thanks in advance!