JSFiddle - React, Tailwind, and code Playground

by Rejith R Krishnan

HTML

<label for="db">Choose type</label>
<select name="s_designation" id="s_designation">

   <option value="coo">Chief Operating Officer</option>
   <option value="uh">Unit Head</option>
</select>

<div id="uh" style="display:none;">
<label for="specify">Specify</label>
<input type="text" name="specify" placeholder="Specify Designation"/>
</div>

JavaScript

$('#s_designation').on('change', function () {
          if ($(this).val() === "uh") {
              $("#uh").show()
          } else {
              $("#uh").hide()
          }
      });