Add Custom CSS/JS for Specific Plugin Only

When you add your custom css or js into plugin it will reflect in whole WordPress dashboard. It’s easy solution for adding your css/js to your specific plugin only.

//Define plugin path
if (!defined("MY_BOOK_PLUGIN_URL"))
    define("MY_BOOK_PLUGIN_URL", plugins_url() . "/x-books"); //x-books is folder name of your custom plugin

//Create an array of page slugs used by you:

$pages_includes = array("add-book, book-list, add-author");

//Define current page
$currentPage = $_GET['page'];

if(in_array($currentPage,$pages_includes)){
                //styles
		wp_enqueue_style("bootstrap", MY_BOOK_PLUGIN_URL . "/assets/css/bootstrap.css", '');
                //scripts
		wp_enqueue_script('jquery');
		wp_enqueue_script('bootstrap.min.js', MY_BOOK_PLUGIN_URL . '/assets/js/bootstrap.min.js', '', true);
}