我想这样可能行得通，如果response 仅为HTML并返回空字符串\'\' 当没有更多结果时：

<script type="text/javascript">
    var ajaxurl = "<?php echo admin_url( \'admin-ajax.php\' ); ?>";
    var page = 2;
    jQuery(function($) {
        $(\'body\').on(\'click\', \'.loadmorefollowing\', function() {
            var data = 
                {
                \'action\': \'user_following_by_ajax\',
                \'page\': page,
                \'security\': \'<?php echo wp_create_nonce("user_more_following"); ?>\',
                \'author\': \'<?php echo esc_html($curauth->ID); ?>\'

                };

            $.post(ajaxurl, data, function(response) {
                if ( \'\' === response ) {
                    $(\'.loadmorefollowing\').hide();
                    return;
                }

                $(\'#following-artists-cont\').append(response);
                page++;
            });
        });
    });
</script>