How to add styles to a submenu page?
One option is to examine the $hook and see, if it matches the parent or any of the child menu page slugs. function load_entry_scripts($hook) { $hook_parts = explode(‘_page_’, $hook); $menu_slug = array_pop($hook_parts); if ( ! in_array( $menu_slug, array(‘my-parent-page-slug’, ‘my-child-page-slug’) ) ) { return; } // add styles && scripts }