JSFiddle - React, Tailwind, and code Playground

HTML

<form method="post" action="sample2.jsp">
<select id="sel" name="sel1">
<option value="Alto">Alto</option>
<option value="Esteem">Esteem</option>
<option value="Honda City">Honda City</option>
<option value="Chevrolet">Chevrolet</option>
</select>
<br>
<select id="sel2" name="sel2">
<option value="1.1">1.1</option>
<option value="1.2">1.2</option>
<option value="1.3">1.3</option>
<option value="1.4">1.4</option>
</select>
<input type="Submit" value="Submit">
</form>

JavaScript

jQuery(document).ready(function(){
$("select#sel").change(function(){
    $("#sel2").;
 alert("hi hi");   
});}