I need to add a hosted third-party JavaScript file in an Angular 2 component.  This file is updated anytime a change is made in the associated third-party vendors proprietary system, so I cannot simply pull down a copy, include it locally, and import...

So I am trying to subscribe to a simple service that return data from a local JSON file.   I have managed to get the service working, I can log it out in the function, but when I subscribe to the service in the angular 2 component, it is always undef...

in service section of angular.io tutorial for angular2 I hit a method named of.for example :  getHeroes(): Observable<Hero[]> {   return of(HEROES); }   or in below sample:  getHero(id: number): Observable<Hero> {   // Todo: send the mess...

I'm new to both Angular2 and Rxjs and I am a little confused about a particular case.  I have a simple service:  import { Injectable } from '@angular/core'; import { Observable, Subject } from 'rxjs/Rx'; import { Http, Response }...

I am very new in Angular 2 and I have the following question about services.  Into the main view (the one related to the app.component.ts class) I have this situation:  <div class="container">   <div class="row">     <d...

I have a service in sub-module that wraps some third-party module, instantiates and initializes its service to prepare for use within app.   @Injectable() class SubmoduleInitializerService {     constructor (thirdPartyService: ThirdPartyService) {...

I want to Pass parameters to POST method in angular 2 but it is not working whwn I used params:new httpParams().set() but it is not worked .I also tried params:new httpParams().set() and headers then also it is not worked & finally I got the solu...

TypeScript File  export class CompanyComponent  {   apiService : APIService;   data : any;   private companyUrl = 'http://localhost:4000/api/company/';    constructor(apiService : APIService) {     this.apiService = apiService;     this.getCo...

I was using EventEmitter and @Output in Angular services, today one of the coleagues mentioned it's not a good practice.  I found this post mentioning it's a bad practice and it seems mostly is personal opinion, and this answer is mentioning...

What is the need of redux because we can also save and get data from services, as far as I understand we can also get and save data into services and those services could be used by other components....