struktura klasy

Struktura klasy
@ViewChild, @ViewChildren, ContentChild
@Inputy @Outputy

readonly observable$, subject
pola publiczne 
pola prywatne

constructor()

gettery

ngOnInit
ngAfterViewInit i inne metody lifecycle


metody publiczne
metody prywatne

ngOnDestroy

Przykład
export class AppComponent implements OnInit, AfterViewInit, OnDestroy {
 @ViewChild('sidenav') sidenav: any;


 readonly isloading$ = new BehaviorSubject<boolean>(false);


 userName = 'Ktoś tam';


 private tajnePole = 42;


 title = 'Diet Tracker';


 constructor(private metaTagService: Meta, private titleService: Title) {}


 get titleGetter() {
   return this.title;
 }


 ngOnInit(): void {
   this.metaTagService.addTags([
     {
       name: 'keywords',
       content: 'Angular SEO Integration, foods, diary, lifestyle',
     },
     { name: 'robots', content: 'index' },
     { name: 'author', content: 'Tomasz Sokalski' },
     { name: 'viewport', content: 'width=device-width, initial-scale=1' },
     { name: 'date', content: '2023-03-08', scheme: 'YYYY-MM-DD' },
     { charset: 'UTF-8' },
   ]);


   this.titleService.setTitle('Diet Tracker');
 }


 ngAfterViewInit(): void {
   throw new Error('Method not implemented.');
 }


 btnClicked() {
   console.log('user has clicked btn');
 }


 private logDate() {
   console.log('date');
 }


 ngOnDestroy(): void {
   console.log('bye');
 }
}