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Questions - subscribe

Angular typescript subscribing to a variable does not give correct results

Motive : I am doing a validation on book name during save - if there is already a book in the DB with the same name, validation error message should be thrown. I have a method in my service that retur...
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Annas

javascript

angular

typescript

observable

subscribe

Votes: 0

Answers: 1

Latest Answer

this.booksService.getBookByName() is asynchonous, it takes some time to execute, in the meantime the code procedes. checkBookExistenanceshould return an observable: checkPreferenceExistenance(): Obser...
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Zerotwelve

Route parameters - subscribe method

"Angular does not create the component if it is already present in the DOM. It reuses the component instance. This implies that the ngOnInit life cycle hook is not invoked when the user navigates...
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Katherine

angular

angular-routing

subscribe

ngoninit

route-parameters

Votes: 0

Answers: 1

Latest Answer

We can access route parameters in couple of ways, by using --> this.route.snapshot.params["someParam"] or this.route.params.subscribe() Let's say we use second approach with .subscribe,...
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Chaka15

Message body was 'null', which is not a value of a supported type

Message body was 'null', which is not a value of a supported type ERROR I need to publish my payload which is: { "items": { "compressString": "Unquitternuncag...
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Charisse Bulan

publish-subscribe

anypoint-studio

subscribe

mule4

Votes: 0

Answers: 1

Latest Answer

Without having all the information I can only make an educated guess that the application is using an old version of the JMS connector which is triggering a know issue already fixed years ago related ...
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aled

Property 'subscribe' does not exist on type '"void"

Hi I am working on a angular web api project and I am getting this error on subscribe keyword, also imported observable but error is same. So if anyone has encounter this before kindly help. employee....
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Joy Josh

angular

observable

subscribe

Votes: 0

Answers: 1

Latest Answer

Try this... import { map } from 'rxjs/operators'; import { Observable } from 'rxjs'; insertRecord(form: NgForm):Observable<any> { return this.service.postEmployee(form.value).pipe(map(((res: a...
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Kib&#233; M.C

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