Custom plugin – load enqueue only for this plugin

Question

The WordPress documentation for admin_enqueue_scripts says that you can:

function load_custom_wp_admin_style($hook) {
        // Load only on ?page=mypluginname
        if($hook != 'toplevel_page_mypluginname') {
                return;
        }
        wp_enqueue_style( 'custom_wp_admin_css', plugins_url('admin-style.css', __FILE__) );
}
add_action( 'admin_enqueue_scripts', 'load_custom_wp_admin_style' );

Basically, you’re being passed $hook and it should be the value of your page name, which is the name you’ve chosen.