https://github.com/bree7e/lesson-services

https://github.com/bree7e/lesson-services

Last synced: 26 days ago
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• Host: GitHub
• URL: https://github.com/bree7e/lesson-services
• Owner: bree7e
• Created: 2018-11-22T17:38:02.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-11-23T09:48:58.000Z (over 7 years ago)
• Last Synced: 2025-02-22T03:43:14.209Z (over 1 year ago)
• Language: TypeScript
• Size: 105 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Сервисы и внедрение зависимостей

```bash

ng g service student

```

Добавить метод в `src\app\student.service.ts`

```ts

@Injectable({

  providedIn: 'root',

})

export class StudentService {

  constructor() {}

  factorial(n): number {

    return n !== 1 ? n * this.factorial(n - 1) : 1;

  }

}

```

Использовать сервис в компоненте `src\app\app.component.ts`

```ts

@Component({

  selector: 'app-root',

  templateUrl: './app.component.html',

  styleUrls: ['./app.component.css'],

})

export class AppComponent implements OnInit {

  title = 'lesson4';

  constructor(private _studentService: StudentService) {}

  ngOnInit() {

    const a = this._studentService.factorial(12);

    console.log(a);

  }

}

```