WordPress 菜单移除空链接#，菜单空链接不可点击

/*Write here your own functions */
/**
 * Remove the href from empty links `<a href="#">` in the nav menus
 * @param string $menu the current menu HTML
 * @return string the modified menu HTML
 */
add_filter( 'wp_nav_menu_items', function ( $menu ) {
    return str_replace( '<a href="#"', '<a', $menu );
} );