Datatable column search with HTML Textbox - ajax

Question

I am trying to enable column search with datatables. I set u Search textboxes with HTML :
<div class="col-lg-3 mb-lg-0 mb-6">
<label>Id:</label>
<input type="text" name="textbox[]" class="form-control datatable-input" placeholder="E.g: 1" data-col-index="0" />
</div>
<div class="col-lg-3 mb-lg-0 mb-6">
<label>Amount:</label>
<input type="text" name="textbox[]" class="form-control datatable-input" placeholder="E.g: 4500" data-col-index="1" />
</div>
And here is my search Ajax :
function addSearchControl(json) {
$("#searchTable thead");
$("#searchTable").each(function (index) {
var searchControl = $('input[name="textbox[]"]');
searchControl.on('keyup', function () {
var indexDataTable = searchControl.index( this );
alert( this.value + ', ' + indexDataTable );
empTable.column(indexDataTable).search(searchControl.val()).draw();
});
});
}
But only first textbox is working and when I type something on the second textbox I get the index which is 1 but cannot search on column 1
This is for Dropdown search I get the value but it doesnt search the table just renders table again :
$('#dropDownMenuKategorie :selected').text();
$("#dropDownMenuKategorie").on('change', function() {
var textSelected = $('#dropDownMenuKategorie option:selected').val();
alert(textSelected);
empTable.column(9).search(textSelected).draw();
});

Answer 1

Maybe you can change the column().search() method like this
empTable.column(indexDataTable).search(this.value).draw();
Sample:
<div class="col-lg-3 mb-lg-0 mb-6">
<label>Name:</label>
<input type="text" name="textbox[]" class="form-control datatable-input" placeholder="E.g: 1" data-col-index="0" />
</div>
<div class="col-lg-3 mb-lg-0 mb-6">
<label>Position:</label>
<input type="text" name="textbox[]" class="form-control datatable-input" placeholder="E.g: 4500" data-col-index="1" />
</div>
<div class="col-lg-12">
<table id="searchTable" class="display" style="width:100%">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</thead>
<tbody>
<tr>
<td>Tiger Nixon</td>
<td>System Architect</td>
<td>Edinburgh</td>
<td>61</td>
<td>2011/04/25</td>
<td>$320,800</td>
</tr>
<tr>
<td>Garrett Winters</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>63</td>
<td>2011/07/25</td>
<td>$170,750</td>
</tr>
<tr>
<td>Ashton Cox</td>
<td>Junior Technical Author</td>
<td>San Francisco</td>
<td>66</td>
<td>2009/01/12</td>
<td>$86,000</td>
</tr>
</tbody>
</table>
</div>
#section scripts{
<script src="https://code.jquery.com/jquery-3.5.1.js"></script>
<script src="https://cdn.datatables.net/1.10.22/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.22/css/jquery.dataTables.min.css" />
<script>
$(document).ready(function () {
var empTable = $("#searchTable").DataTable();
$("#searchTable").each(function (index) {
var searchControl = $('input[name="textbox[]"]');
searchControl.on('keyup', function () {
var indexDataTable = searchControl.index(this);
//alert(this.value + ', ' + indexDataTable);
empTable.column(indexDataTable).search(this.value).draw();
});
});
})
</script>
}
Result: