JSFiddle - React, Tailwind, and code Playground

HTML

<form action="/shop/products.php" data-ajax="false" method="post">
    <div data-role="fieldcontain">

        <input name="submit" class="obutn" type="submit" value="Order" />
        <input name="submit" class="oEbutn" type="submit" value="Extras" />

    </div>
</form>

JavaScript

$(".obutn").click(function() {
    $(this).closest("form").attr("action", "/shop/products.php");     
});
$(".oEbutn").click(function() {
    $(this).closest("form").attr("action", "/shop/extras.php");       
});

$("form").on("submit", function () {
    alert($(this).attr("action"));
});