[WordPress] sticky "Publish/Update" button on scroll in wp-admin edit pages

<?php

// add this code in your child theme's functions.php file

/*******************************************************************\
|* sticky "Publish/Update" button on scroll in wp-admin edit pages *|
\*******************************************************************/

function sticky_admin_button_footer_function($data) {
    ?>
        <script>
            if (typeof(jQuery)!='undefined') {
                jQuery(document).ready(function($) {
                    if ($('#publishing-action').length) {
                        var akn_patop = 0;
                        $(window).on('scroll',function() {
                            if (!$('#publishing-action').hasClass('akn-sticky'))
                                akn_patop = $('#publishing-action').offset().top-($('.woocommerce-layout__header-wrapper').height()||0)-($('#wpadminbar').height()||0)-30;
                            if ($(window).scrollTop()>akn_patop) {
                                $('#publishing-action').addClass('akn-sticky').css({'position':'fixed','right':'30px','top':($('.woocommerce-layout__header-wrapper').height()||0)+$('#wpadminbar').height()+30,'z-index':'1000'}).find('#publish').css({'box-shadow':'0 0 20px rgb(85,93,102)'});
                                $('#delete-action').css({'margin-bottom':$('#publishing-action').height()+'px'});
                            }
                            else {
                                $('#publishing-action').removeClass('akn-sticky').css({'position':'','right':'','top':'','z-index':''}).find('#publish').css({'box-shadow':''});
                                $('#delete-action').css({'margin-bottom':''});
                            }
                        });
                        $(window).trigger('scroll');
                    }
                });
            }
        </script>
    <?php
}
add_action('admin_footer', 'sticky_admin_button_footer_function');