JSFiddle - React, Tailwind, and code Playground

HTML

<select class="dropDownList" id="PersonFunction">
    <option value="">Choose</option>
    <option value="1">Vice President</option>
    <option value="2">Director</option>
    <option value="3">Secretary</option>
    <option value="4">Clerk</option>
</select>

JavaScript

$('#PersonFunction').on('change', function() {
  $('option:selected', this).attr('selected',true).siblings();
});