//////////////////////// ngFor

<ul>
  <li *ngFor="let item of collection">Bla<li>
</ul>

///////////////////////// evenements

(nomEvenement)="methodeDuComposant(parametresEventuels)"

////////////////////////// ngClass

    [ngClass]="{ 'nomClasse': valeur }"

//////////////////////////////// styles

@Component({
  selector: 'mon-component',
  template: '<h1>Bla</h1>',
  styles:  ['h1 { font-size: 8px; }']
})
export class AppComponent {

  constructor (param:string, param2:string) {
	// instructions
  }
}