ng-push-notification

Angular 4+的推送通知服务 简单的推送通知服务可显示Web通知。 npm install ng-push-notification 如何汇入： import { PushNotificationModule } from 'ng-push-notification' ; @ NgModule ( { ... , import : [ ... , PushNotificationModule . forRoot ( /* Default settings here, interface PushNotificationSettings */ ) , ] , } ) export class AppModule { } 怎么做菜： import { PushNotificationService } f