CoreProgramm/app.component.ts

## app.component.ts
@Component({
  selector: 'app-root',
  template: `<h1>{{firstName ? firstName : 'Name is Blank'}}</h1>`
})
export class AppComponent {
  firstName = '';
}
	@Component({
	selector: 'app-root',
	template: `<h1>{{firstName ? firstName : 'Name is Blank'}}</h1>`
	})
	export class AppComponent {
	firstName = '';
	}