Append custom class to body element in wordpress

Have you ever wondered how to add custom class to body in any wordpress plugin or page.
Place the below code to update/add new class with any conditions.


add_filter('body_class','append_body_class');
function append_body_class( $classes ) {

    if (is_singular('post')) {
 
    $classes[] =  'news-single';
 
}

 
  return $classes;
}