Change delegation in oldIE

by MoonScript

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).on( "change", ".changetest", function(){
    var v = $(this).val();
   $("#testresult").text( v ); 
});

$("#addselect").click(function(){
    var $select = $( $(".select-group").html() ).filter(".changetest:last");
    $(".select-group").append( $select );
});