JSFiddle - React, Tailwind, and code Playground

HTML

<div class="select-group">
    <select class="changetest">
        <option value="" selected="selected">Select a choice</option>
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
    </select>
</div>

<input type="button" id="addselect" value="Add a select"/>

<P>result: <span id="testresult"></span></p>

JavaScript

$(document).ready(function() {
    
    $(".changetest").live("change",function(){
        var v = $(this).val();
       $("#testresult").text( v ); 
    });
    
    $("#addselect").click( function(){
        var s = $(".changetest:last").clone();
        $(".select-group").append( s );
    });
});