JSFiddle - React, Tailwind, and code Playground

HTML

<div class="acknowledge">
    <form method="post" name="blitzread" action="blitzread.php" id="submit">
        <input type="hidden" name="emp_id" value="123" />
        <input type="hidden" name="current_time" value="123" />
        <button type="submit" name="Submit" class="btn btn-large btn-danger">Acknowledged</button>
    </form>
</div>

JavaScript

$('#submit').submit(function(e) {

    e.preventDefault();
    e.stopPropagation();

    $.ajax({
        data: $(this).serialize(),
        type: $(this).attr('method'),
        url: $(this).attr('action'),
        success: function(response) {
            $('.acknowledge').html('<button class="btn btn-large btn-success disabled">Acknowledge</button>');
        }
    });
    return false;

});