jQuery(function($) {
    $('.brill_loadmore').click(function() {

        var button = $(this),
            data = {
                'action': 'loadmore',
                'query': brill_loadmore_params.posts,
                'page': brill_loadmore_params.current_page
            };

        $.ajax({
            url: brill_loadmore_params.ajaxurl,
            data: data,
            type: 'POST',
            beforeSend: function(xhr) {
                button.html('<i class="fas fa-spinner"></i> Loading...');
            },
            success: function(data) {
                if (data) {
                    button.html('More posts')
                    $('.card-columns, .post-list').append(data); // insert new posts
                    brill_loadmore_params.current_page++;

                    if (brill_loadmore_params.current_page == brill_loadmore_params.max_page)
                        button.remove();
                } else {
                    button.remove();
                }
            }
        });
    });
})