Load custom script in wp admin page/dashboard

//Add this code in functions.php file to load the custom script in wp admin page/dashboard
function load_custom_script() {
    wp_enqueue_script('custom_js_script', get_bloginfo('template_url').'/js/custom.js', array('jquery'));
}
add_action( 'admin_enqueue_scripts', 'load_custom_script' );