Export table data to Excel using jQuery

MIMEtype: Optional. The type of document you are writing to. Default value is "text/html". replace: Optional. If set, the history entry for the new document inherits the history entry from the document which opened this document.

HTML

<div class="card border-primary mb-3">
      <table class="table table-hover results" id="exportExcel">
        <thead style="color: white; background-color: #0099CC">
          <tr>
            <td>Číslo</td>
            <td>Meno</td>
            <td>Priezvisko</td>
            <td>Ostatné</td>
            <td class="stockItem"><button type="button" id="excel" class="btn btn-sm btn-outline-light">stiahni zoznam</button></td>
          </tr>
        </thead>
        <tbody id="excelExport"></tbody>
        <!-- data dynamically loaded with ajax -->
          <tr>
            <td>1</td>
            <td>Ľudmila</td>
            <td>Malá</td>
            <td>LM</td>
          </tr>
          <tr>
            <td>2</td>
            <td>Peter</td>
            <td>Hraško</td>
            <td>PH</td>
          </tr>
      </table>
    </div>

CSS

body {
    font-size: 12pt;
    font-family: Calibri;
    padding : 10px;
}
table {
    border: 1px solid black;
}
th {
    border: 1px solid black;
    padding: 5px;
    background-color:grey;
    color: white;
}
td {
    border: 1px solid black;
    padding: 5px;
}

JavaScript

$(document).ready(function() {
$("#excel").click(function(e) {
            // ajax field needed
            /*var stDate = $("#fromDate").val();
            var enDate = $("#toDate").val();*/
            //ajax function
            /*
            $.ajax({  
            type: 'POST',   
            url: 'downloadExcel.php',
            data: 'startDate='+stDate+'&endDate='+enDate, 
            success: function(data) {
                $('#excelExport').html(data);*/
                
                e.preventDefault();
                           
                //getting data from our table
                var data_type = 'data:application/vnd.ms-excel; charset=utf-8';
                var table_div = document.getElementById('exportExcel');
                var table_html = table_div.outerHTML.replace(/ /g, '%20');

                var a = document.createElement('a');
                a.href = data_type + ', ' + table_html;
                a.download = 'exported_table' + '.xls';
                a.click();
    //}
    //});
    });
    });