RXJS Observable doSomething onComplete

Question

I would like to use RXJS Observable. Basically, it works fine, but I need to not only respond to observer.next (), but also to call observer.complete (). How to get OnComplete RXJS Observable event? In my opinion, the RXJS document is confusing.

export class Service {
    myMethod():Observable<any> {
        return Observable.create((observer:any) => {
        for(let i=0; i<10; i++) {
         observer.next(i);
        }
        if(true==true) {
            // this event I need
            observer.complete();
        } else {
            observer.error(xhr.response);
        }
    }
}

export class Component() {
    // constructor etc.

    doSome() {
        this.service.myMethod()
        // Here I would like to get OnComplete event
          .catch(this.handleError)
          .subscribe((num:any) => {
            console.log(num);
        });
    }
}

Answer 1

The subscription method accepts three callbacks. The latter is for the full event.

doSome() {
  this.service.myMethod()
      .subscribe((num:any) => {
        console.log(num);
      }, (err) => {
        this.handleError(err);
      }, () => { // <----
        this.handleComplete();
      });
}

You can also use an operator for this finally.

doSome() {
  this.service.myMethod()
      .catch(this.handleError)
      .finally(this.handleComplete) // <----
      .subscribe((num:any) => {
        console.log(num);
    });
}