im reading data in component A, route to component B and pass data as extras. Component B now has this data in its instance scope. I then pass this data to component C and do something with that data. If I now return to component B by going back a page, the data which I received from A (my state) is not present anymore.
My question: How can I keep the state of B?
You can store your data in a shared service, as these are singleton classes, the data will persist until your application is destroyed.
@Injectable({
providedIn: 'root',
})
export class MyService {
data = '';
}
export class OneComponent implements OnInit {
constructor(private myService: MyService){};
ngOnInit(): void {
this.myService.data = "I'm not going anywhere!"
}
}