New hooks let you add custom fields to menu items

WordPress 5.4 gives you two new actions that let you add custom fields to menu items—in the Menu screen and in the CustomizerCustomizer Tool built into WordPress core that hooks into most modern themes. You can use it to preview and modify many of your site’s appearance settings.’s menu editor.

Menus adminadmin (and super admin) screen

The new wp_nav_menu_item_custom_fields action fires just before the move buttons of a nav menu item in the menu editor.

You can assign five parameters:

• $item_id: the menu item ID (integer)
• $item: the menu item data object (object)
• $depth: the depth of the menu item (integer)
• $args: an object of menu item arguments (object)
• $id: the Navigation MenuNavigation Menu A theme feature introduced with Version 3.0. WordPress includes an easy to use mechanism for giving various control options to get users to click from one place to another on a site. ID (integer)

Here’s a simple example:

function wporg_my_custom_field() {
	esc_html_e( 'Howdy! WordPress 5.4 is coming!', 'wporg' );
}
add_action( 'wp_nav_menu_item_custom_fields', 'wporg_my_custom_field' );

And here’s the result (highlighted in green dashed border):