JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td><input id="jedan" value=""/></td>
        <td>
            <select id="dva">
                <option val="nemanja">Nemanja</option>
                <option val="nesic">Nesic</option>
                <option val="vranje">Vranje</option>
            </select>
        </td>
    </tr>
</table>

JavaScript

$( "#dva" ).change(function() {
  $('#jedan').val($( "#dva" ).val());
});