JSFiddle - React, Tailwind, and code Playground

HTML

<select id="myselect">
   <option value="1">One</option>
   <option value="2">Two</option>
</select>

<select id="myselect2">
   <option val="1">One</option>
   <option val="2">Two</option>
</select>

JavaScript

$('select').change(function() {
    alert($(this).val());
});