do_action( ‘admin_enqueue_scripts’, string $hook_suffix )

User Contributed Notes

1. Skip to note 11 content

   Drew Jaynes 10 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 14You must log in to vote on the helpfulness of this note

   Selectively enqueue a script in the admin

   The admin_enqueue_scripts action hook can also be used to target a specific admin page. In this example we are loading a javascript file in the head section of edit.php.

   /**
    * Enqueue a script in the WordPress admin on edit.php.
    *
    * @param string $hook Hook suffix for the current admin page.
    */
   function wpdocs_selectively_enqueue_admin_script( $hook ) {
       if ( 'edit.php' != $hook ) {
           return;
       }
       wp_enqueue_script( 'my_custom_script', plugin_dir_url( __FILE__ ) . 'myscript.js', array(), '1.0' );
   }
   add_action( 'admin_enqueue_scripts', 'wpdocs_selectively_enqueue_admin_script' );
2. Skip to note 12 content

   gavleson 7 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 8You must log in to vote on the helpfulness of this note

   Figure out your $hook name

   If you are unsure what the $hook name of the current admin page of which you want to conditionally load your script is, add this to your page:

   $screen = get_current_screen(); 
   print_r($screen);
3. Skip to note 13 content

   Drew Jaynes 10 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 6You must log in to vote on the helpfulness of this note

   Enqueue a custom stylesheet in the admin

   Sometimes you want to load a set of CSS and/or Javascript documents to all admin pages. You can do this from within your plugin or from your themes function file:

   /**
    * Register and enqueue a custom stylesheet in the WordPress admin.
    */
   function wpdocs_enqueue_custom_admin_style() {
           wp_register_style( 'custom_wp_admin_css', get_template_directory_uri() . '/admin-style.css', false, '1.0.0' );
           wp_enqueue_style( 'custom_wp_admin_css' );
   }
   add_action( 'admin_enqueue_scripts', 'wpdocs_enqueue_custom_admin_style' );
4. Skip to note 14 content

   itskawsar 7 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 2You must log in to vote on the helpfulness of this note

   Another way to load scripts or css in specific admin page by using this function

   In this example, we are loading a javascript and a css file in the head section of nav-menus.php page.

   function add_script_to_menu_page()
   {
   	// $pagenow, is a global variable referring to the filename of the current page, 
   	// such as ‘admin.php’, ‘post-new.php’
   	global $pagenow;
   
   	if ($pagenow != 'nav-menus.php') {
   		return;
   	}
   	
   	// loading css
       wp_register_style( 'some-css', get_template_directory_uri() . '/css/some.css', false, '1.0.0' );
       wp_enqueue_style( 'some-css' );
   	
   	// loading js
   	wp_register_script( 'some-js', get_template_directory_uri().'/js/some.js', array('jquery-core'), false, true );
       wp_enqueue_script( 'some-js' );
   }
   
   add_action( 'admin_enqueue_scripts', 'add_script_to_menu_page' );
5. Skip to note 15 content

   Matt Keys 3 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 2You must log in to vote on the helpfulness of this note

   Note: if you are trying to use the $hook_suffix to check if you are on a submenu page, there is an important bug you should know about. This mostly affects people who are distributing their code in a theme or plugin, where the code will be run on WordPress installations in multiple languages.

   https://core.trac.wordpress.org/ticket/18857

   Basically the part of the $hook_suffix that is the parent menu page slug can be translated, so it will not match the string you are expecting.

   You can work around this bug using code like:

   function enqueue_my_assets( $hook_suffix ) {
   	$parent_menu_slug = sanitize_title( __( 'Parent Menu Title', 'parent-translation-domain' ) );
   
   	if ( $parent_menu_slug . '_page_my_sub_menu' != $hook_suffix ) {
   		return;
   	}
   
   	// we must be on the right page then ...
   }
   add_action( 'admin_enqueue_scripts', 'enqueue_my_assets', 10, 1 );

   Basically you get the translated parent menu slug first, and use it when checking the $hook_suffix to make sure you are on the right page.
6. Skip to note 16 content

   Anonymous User 7 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

   Load css and js only on a particular sub-menu page

   // custom css and js
   add_action('admin_enqueue_scripts', 'cstm_css_and_js');
   
   function cstm_css_and_js($hook) {
       // your-slug => The slug name to refer to this menu used in "add_submenu_page"
   		// tools_page => refers to Tools top menu, so it's a Tools' sub-menu page
       if ( 'tools_page_your-slug' != $hook ) {
           return;
       }
   
       wp_enqueue_style('boot_css', plugins_url('inc/bootstrap.css',__FILE__ ));
       wp_enqueue_script('boot_js', plugins_url('inc/bootstrap.js',__FILE__ ));
   }
7. Skip to note 17 content

   Dhimas Kirana 2 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

   Load your scripts on your menu page and all sub-menu below your menu page.

   /** Add Admin Pages **/
   function add_admin_pages() {
   
       // Add Menu Page
       add_menu_page('Top Level Menu', 'Top Level Menu', 'manage_options', 'top-level-menu', 'your_callback_menu', 'dashicons-admin-tools', 10);
   
       // Add Sub Menu Page
       add_submenu_page('top-level-menu', 'Sub Menu', 'Sub Menu', 'manage_options', 'sub-menu', 'your_callback_submenu');
   
   }
   add_action('admin_menu', 'add_admin_pages');
   
   /** Enqueue Stylesheets **/
   function add_admin_scripts($hook) {
   
       // global $parent_file defined on admin-header.php line 27
       // https://core.trac.wordpress.org/browser/tags/5.9/src/wp-admin/admin-header.php#L27
       global $parent_file;
       if ('top-level-menu' != $parent_file) {
           return;
       }
   
       // For example we load sweetalert on your menu page and all sub-menu below your menu page.
       wp_enqueue_script('sweetalert-js', 'https://unpkg.com/sweetalert/dist/sweetalert.min.js');
   
   }
   add_action('admin_enqueue_scripts', 'add_admin_scripts');
8. Skip to note 18 content

   Mahbub Hasan Imon 5 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   What if you want to load CSS, JS to specific pages from your created menu and submenu? ( multiple pages )

   function addPage()
   {
   global $customMenu, $customSubMenu;
           /**
            * Menu
            */
          $customMenu = add_menu_page( 'Custom Menu', 'Custom Menu', 'manage_options', 'custom-menu', 'customMenuPage', '', 10);
           /**
            * Sub Menu Pages
            */
           $customSubMenu = add_submenu_page( 'custom-menu', 'Settings', 'Settings', 'manage_options', 'settings', 'settings_page');
   }
   add_action( 'admin_menu', 'addPage');
     
   /** Enqueue Stylesheets **/
   function enqueueAdminStyles( $hook)
       {
           global $customMenu, $customSubMenu;
           $allowed = array( $customMenu, $customSubMenu);
           if( !in_array( $hook, $allowed)  )
           {
               return;
           }
           wp_enqueue_style( '-main-', 'assets/admin/css/ucsi.css', '', '1');
       }
   add_action( 'admin_enqueue_scripts', 'enqueueAdminStyles');
9. Skip to note 19 content

   Pilate Chinyengetere 4 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

   The $hook_suffix is kind of tricky to know it’s value out of your head especially on custom admin pages. This junky little trick can help:

   function wpdocs_myselective_css_or_js( $hook ) {
       echo '<h1 style="color: crimson;">' . esc_html( $hook ) . '</h1>';
   }
   
   add_action( 'admin_enqueue_scripts', 'wpdocs_myselective_css_or_js' ); 
10. Skip to note 20 content

    Chigozie Orunta 2 years ago

    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note

    Here’s how you can hook your namespaced function:

    namespace YourNameSpace;
    
    function register_your_admin_script() {
    	wp_enqueue_script( 'your-admin-script', get_template_directory_uri() . '/js/your-admin-script.js', array(), '1.0.0', true );
    }
    
    add_action( 'admin_enqueue_scripts', __NAMESPACE__ . '\register_your_admin_script' );