admin_head │ action-hook │ WP 2.1.0

Fires inside the <head> section on all WordPress admin pages.

Use it to output inline CSS/JS or other HTML markup. The callback does not receive any arguments.

Usage

add_action( 'admin_head', 'wp_kama_admin_head_action' );

/**
 * Function for `admin_head` action-hook.
 * 
 * @return void
 */
function wp_kama_admin_head_action(){
	// action...
}

Examples

#1 Add CSS to the admin dashboard

Hide the setting for displaying the welcome panel.

add_action( 'admin_head', 'wp_kama_hide_welcome_panel_option' );

function wp_kama_hide_welcome_panel_option() {
	$screen = get_current_screen();

	if ( ! $screen || 'dashboard' !== $screen->id ) {
		return;
	}

	?>
	<style>
		[for="wp_welcome_panel-hide"] {
			display: none !important;
		}
	</style>
	<?php
}

#2 Add JavaScript to the admin area

add_action( 'admin_head', 'wp_kama_admin_head_script' );

function wp_kama_admin_head_script() {
	?>
	<script>
		console.log( 'Admin page loaded' );
	</script>
	<?php
}