JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="https://nightly.datatables.net/js/jquery.dataTables.js"></script>
<script src="https://cdn.datatables.net/select/1.2.0/js/dataTables.select.js"></script>
<script src="https://cdn.datatables.net/buttons/1.2.2/js/dataTables.buttons.js"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/select/1.2.0/css/select.dataTables.css">
<link rel="stylesheet" href="https://cdn.datatables.net/buttons/1.2.2/css/buttons.dataTables.css">
<link rel="stylesheet" href="https://nightly.datatables.net/css/jquery.dataTables.css">
      <table id="example" class="table" width="100%">
        <thead>
          <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
			<th></th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td id="r1">61</td>
            <td>2011/04/25</td>
            <td>$3,120</td>
            <td>r1</td>
          </tr>
           <tr>
            <td>Herrod Chandler</td>
            <td>Sales Assistant</td>
            <td>San Francisco</td>
            <td id="r2">59</td>
            <td>2012/08/06</td>
            <td>$4,080</td>
            <td>r2</td>
          </tr>
          <tr>
            <td>Rhona Davidson</td>
            <td>Integration Specialist</td>
            <td>Edinburgh</td>
            <td id="r3">55</td>
            <td>2010/10/14</td>
            <td>$6,730</td>
            <td>r3</td>
          </tr>
          <tr>
            <td>Colleen Hurst</td>
            <td>Javascript Developer</td>
            <td>San Francisco</td>
            <td id="r4">39</td>
            <td>2009/09/15</td>
            <td>$5,000</td>
            <td>r4</td>
          </tr>
          <tr>
            <td>Sonya...

JavaScript

$(document).ready(function() {
    
	    var table = $('#example').DataTable( {
	        dom: 'Bfrtip',
	        select: true,
	        buttons: [
	            {
	                text: 'Modify selected user age',
                  action: function ( e, dt, button, config ) {
                    var actualUser 		= dt.row({ selected: true }).data()[0];
                    var actualAge 		= dt.row({ selected: true }).data()[3];
                    var rowNum 			= dt.row({ selected: true }).data()[6];
                    var newAge			= Number(actualAge) + 1;
                    if (confirm('change ' +  actualUser + ' age\'s to ' + newAge+ ' ?')) {
                       $("#result").text('Database update : New age for ' + actualUser + ' is ' + newAge);
                       //$('#example').DataTable().cell(':eq(' + rowNum  + ')', 3).data( newAge );
                       $('#example').DataTable().cell('#' + rowNum).data( newAge );
                      }
	                }
	            }
	        ]
	    } );
	} );