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Questions - ngoninit

The subscriptions getting called multiple times, when navigated to different page and coming back again in angular

I have a function A and B. I want both these functions to run at the initial of the component load, on ngOnInit, but B should run only after the completion of A. Coz for B to run, i will need values f...
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AngularEnthusiast

angular

typescript

observable

ngoninit

Votes: 0

Answers: 1

Latest Answer

Instead of subscribing, you could could use firstValueFrom (https://rxjs.dev/api/index/function/firstValueFrom) which is returning a Promise from a Observable. Then you can simply await the promise, w...
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Seega

unable to initialize class property inside ngOnit error

I'm getting an error that says monetization has no inializer. I'm also getting an error inside ngOninit that says monetization is not assignable to type string | null. export class MoviesPageComponent...
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pdrake1988

angular

typescript

ngoninit

Votes: 0

Answers: 2

Latest Answer

You get this error because monetization is not initialized in the constructor. What you'll need to do, is make the property optional. export class MoviesPageComponent implements OnInit { movies: Mov...
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Matthieu Riegler

Angular NgOnInit executing method before another

I have an angular application where I am trying to get an array of sources for an image carousel. How I have it set up currently I have a "getUrls()" method to get the urls from the database...
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Nolan Hovis

angular

typescript

firebase-realtime-database

rxjs

ngoninit

Votes: 0

Answers: 4

Latest Answer

Since getUrls() perform its work asynchronously, you have no idea when it completes and return imageUrls. You'll have to refactor your code a little, like this getUrls():Observable<string[]> { r...
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Obaid

Setting Component Property to Use After ngOnInit()

I am very new to angular. So trying to learn while working on an existing code base. I'm trying to setup a div to display when a message is loaded in a component. The div will show fine once the corre...
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Beshman88

angular

ngoninit

Votes: 0

Answers: 0

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