fix code generate

add_filter( 'jnews_dropdown_link', 'jnews_child_dropdown_link' );

function jnews_child_dropdown_link( $dropdown )
{
    //For add submenu
    $item = array(
        'new_submenu' => array(
            'text' => esc_html__( 'New Submenu', 'jnews' ), //your menu name
            'url'  => '#' //the url
        ),
    );

    if ( isset( $item ) )
    {
        $dropdown = array_merge( $item, $dropdown );
    }

    //For remove submenu
    //unset($dropdown['edit-account']);

    return $dropdown;
}