JSFiddle - React, Tailwind, and code Playground

HTML

<select id="selectclassid">
    <option value="option1" selected="selected">Option 1</option>
    <option value="option2">Option 2</option>
  </select>

JavaScript

$( document ).ready(function() {

   

    
$("#selectclassid").on('change', function() {
    alert('The option with value ' + $(this).val());
});
    
    
     $( "#selectclassid" ).trigger( "change" );
    
});