JSFiddle - React, Tailwind, and code Playground

HTML

<select class="MyClass" id="MyID">
    <option value="1">Example1</option>
    <option value="2">Example2</option>
    <option value="3" selected>Example3</option>    
</select>

JavaScript

jQuery(document).ready(function () {   
     
   
     $("#MyID").change(function(){
       
        var value = $(".MyClass").val();    
         alert($(".MyClass[value='"+value+"']").val());
     });
 })