I have an issue, I want to rewrite my app code and change main module to main root standalone component pointed in main.ts. All works fine but I have an issue with HttpClientModule. I am using Http...

In creating dynamic components in Angular 2, I found out that this process requires ViewContainerRef in order to add newly created component to DOM. And in passing @Input and @Outputto those dynami...

I had a discussion today where some of my colleagues said that they inject their Angular services like that: constructor(readonly language: I18nService) They said they do this because it prevent...

While working on a program that I am facing an issue with, constructor and its dependency injection from its child class. DataService: A service class which has all the CRUD operation at one place...

I have an angular app upgraded to angular 9 and I am using angular element in it which is also upgraded to angular 9. I have a service module (angular 9) which I am importing in my angular app. My ...

I have the following service: import { Injectable } from '@angular/core'; import { MenuItem } from './../classes/menu-item'; import { ITEMS } from './../static-data/items-list'; @Injectable() e...

i am using angular2-toaster in my angular app it is very simple, you define toaster container in the template of component <toaster-container></toaster-container> and you use to...

In Angular 9 the injectable decorator option providedIn has a new value called any. What is the difference between root and any? Is a service considered a singleton in the case that I use any? @I...

I need to get the status code of the following http call and return it as a string //This method must return the status of the http response confirmEmail(mailToken):Observable<String>{ ret...

In an angular application we have ngOnDestroy() lifecycle hook for a component / directive and we use this hook to unsubscribe the observables. I want to clear / destory observable that are create...

I was doing the angular Tour-hero project(replaced Hero with 'User'). There when I made the Hero(User) and Hero-detail(User-detail) separate and when I tried to access the details, it is not showin...

In Angular, I have a service that has few things injected through the constructor(...). However that service is also at some place created by calling the constructor. Therefore, adding another serv...

I'm attempting to use DomSanitizer to sanitize a dynamic URL within a Component using I can't seem to figure out what the correct way to specify a Provider for this service is. I'm using Angular 2...

I have read many articles about Angular folder structure. It is still not clear to me where do we put component services. Shared services between components are put under shared. But what about a s...

Background We're building an Angular2 app, and are accumulating a lot of specific services relating to one module. All these services are loosely coupled to a Subject<Type> event system in t...

TLDR: How do I use one instance of an Angular (6) service for one set of (instances of) components (and directives) and another one for another set of the same components. Or with more informati...

In Angular 2, I have my routes defined in app.module.ts: const appRoutes: Routes = [ { path: '', component: HomeComponent, }, { path: 'admin', component: AdminComponent, } ]; I also hav...

I have a problem trying to unit test an angular service. I want to verify that this service is properly calling another service that is injected into it. Lets say I have this ServiceToTest that in...

So, I was trying to get the solution of this problem. But, somehow I am unable to do so, May be because of the lack of knowledge in angular 5. This is my service: GetCurrentUserData(): Observable&...

I'm expecting Angular to wait until my loadConfig() function resolves before constructing other services, but it is not. app.module.ts export function initializeConfig(config: AppConfig){ return ...

The redirectTo property isn't working in my Angular 2 app. I have the following routes in my app.routing.ts: const routes: Routes = [ { path: '', redirectTo: '/page/1', pathMatch: 'full' }, { pa...

I was working on a project and came across a service which does not have the @Injectable() decorator, and works fine. Till now , I was under the impression that in angular if we want to implement D...

I have a service to pass data between components and when called it works but when i reload the service data gets reset.So when i searched on reload the memory is reset so is there a way to persist...

Angular dependency injection let you inject a string, function, or object using a token instead of a service class. I declare it in my module like this: providers: [{ provide: MyValueToken, useV...

I have an Angular 5 application, and I'm attempting to use a Google OAuth login to get a username and then set that username in a service to be used as the logged in user. Before I added the login ...