How to open target blank in a custom admin sub menu page?

Question

Here is my external link menu function for admin area:

##CACHE MENU
add_action(\'admin_menu\', \'mariCacheDel\');
function mariCacheDel() {
    global $subme         


        

Answer 1

It has to be with jQuery and using a small trick in the admin_menu to insert a target div with an ID:

add_action('admin_menu', 'mariCacheDel');
function mariCacheDel() {
    global $submenu;
    $submenu['themes.php'][] = array(
            '
MARIA CACHE
', // <-- trick
            'manage_options', 
            site_url( '/cache/?do=deleteAll' )
    );
}

add_action( 'admin_footer', 'make_maricache_blank' );    
function make_maricache_blank()
{
    ?>