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...

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 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...

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....

Using Javascript Infovis Toolkit as an external library for drawing graph and trees. I need to manipulate the onClick method of nodes in order to asynchronously sending an HTTP GET request to the server and assign the data that comes from server to t...

Im using an index.ts file to encapsulate exports as mentioned in the angular 2 style guide (https://github.com/mgechev/angular2-style-guide/blob/master/old/README.md#directory-structure). This worked fine across the app Im writing, but for some reaso...

I was trying to create Angular 2/4 Service with possibily to upload files. I could not find solution on any resourse so I probably wanna ask you guys. So the idea is somewhere in Component there is input field with type=file. It has directive (change...