Top "Ngoninit" questions

For questions about ngoninit, a lifecycle hook that is called after Angular has initialized all data-bound properties of a directive.

Difference between Constructor and ngOnInit

Angular provides life cycle hook ngOnInit by default. Why should ngOnInit be used, if we already have a constructor?

angular typescript ngoninit
What's the difference between ngOnInit and ngAfterViewInit of Angular2?

I can not understand what the difference between ngOnInit and ngAfterViewInit. I found the only difference between them is @ViewChild. …

angular ngoninit
Router Navigate does not call ngOnInit when same page

I am calling router.navigate on same page with some query string parameters. In this case, ngOnInit() does not call. …

angular navigateurl ngoninit
Angular 2 Component Constructor Vs OnInit

If I want function x to happen every time a component loads, whether its the first time, I navigate to …

angular constructor ngoninit
Why is ngOnInit called twice?

I trying to create new component, ResultComponent, but its ngOnInit() method is getting called twice and I don't know why …

angular ngoninit
Angular 2 ngOnInit not called

I am building an Angular 2 app with version beta.8. In this app i have a component which implements OnInit. In …

angular typescript ngoninit
Angular 4 ngOnInit not called after router.navigate

I have 3 tabs in which one tab shows a table with list of employees. Works good when it is loaded …

angular ngoninit
Is calling a function on ngOnInit async?

If I call a function in ngOnInit() that makes an observable call to get data, is the this.getSomething() call …

angular asynchronous ngoninit
Trigger valueChange with Initialized value - angular2

I'm writing an angular2 application and I'm stuck with something. First of all, I have a select which is bind …

angular rxjs observable valuechangelistener ngoninit
What is the difference between Angular ngOnInit() and ngOnChanges()?

Angular provides lifecycle hook ngOnInit() and ngOnChanges() by default. Why should ngOnInit be used, if we already have a ngOnChanges? …

angular typescript ngoninit ngonchanges