Angular中的服务（状态管理、共享数据）

import { StorageService } from '../service/storage.service';
 
@Component({
  selector: 'app-cpmone',
  templateUrl: './cpmone.component.html',
  styleUrls: ['./cpmone.component.less'],
})
export class CpmoneComponent implements OnInit {
 
  // publice protected private
  constructor(public storageService: StorageService) {}
 
  ngOnInit(): void {}
 
  console.log(storageService.data...)
  
}