How to get value on form submit about jquery-editable-select HOT 1 OPEN

<form id="my_form">
    <select id="my_select">
        <option value="1">One</option>
        <option value="2">Two</option>
       <option value="3">Three</option>
    </select>
</form>

$('#my_select').editableSelect();
$('#my_form').on('submit', function(e){
    e.preventDefault();
    var option_value = ???;