set page title drupal 8 code example
Example: drupal 8 get page title
$request = \Drupal::request();
$route_match = \Drupal::routeMatch();
$title = \Drupal::service('title_resolver')->getTitle($request, $route_match->getRouteObject());
$request = \Drupal::request();
$route_match = \Drupal::routeMatch();
$title = \Drupal::service('title_resolver')->getTitle($request, $route_match->getRouteObject());