Hi Arun,
You should read some stuff about how asynchrony works in JS. Learn about
promises and observables and callbacks. You should really understand how
promises work before you try stuff like this. For http calls, the
observables mimic this behaviour very close.
Don't ever subscribe to an observable inside a service, unless you really
know what you are doing. Once you have this down, this is how you could
program your onint once everything else is in place too:
class someElement {
constructor(private userService: UserService) {}
async ngOnInit() {
this.user = await this.userService.getAuthentication.toPromise();
console.log(this.user)
}
}
But first, make sure you are understanding how callbacks and promises work.
Regards
Sander
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