Use this tag for questions related to Angular 2 Services, which are JavaScript functions responsible for performing a single task.
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Questions tagged [angular2-services]
2204 questions
0
votes
0 answers
Angular 2 Json inside another array get headers key value in html
"url" : "https://reqres.in/api/users?page=2",
"method" : "GET",
"authorization" : null,
"headers" : "[{\"key\":\"wrtwrt\",\"value\":\"wrtwr\"}]",
"body" : ",[{\"key\":\"\",\"value\":\"\"}]",
"urlType" : "PULLEXPENSE",
"createdBy" : {
"id" :…
Dinakar Sandeep
- 11
- 5
0
votes
0 answers
exporting Angular 4 service as array of injectables
I know there is the following way of defining injectable services in Angular 2/4 (correct me if I am wrong somewhere, please):
@Injectable()
export class SomeService {
...
}
export const someServiceInjectables: Array = [
…
Dmitry Senkovich
- 5,521
- 8
- 37
- 74
0
votes
2 answers
Excel upload using Angular2(Frontend) and Spring Boot (Backend)
I am new to Angular 2 and I am trying to upload an Excel from Angular 2 frontend.
I want to upload the Excel from Angular 2 frontend, pass it to Spring Boot in backend, inside Spring Boot I will make necessary changes. Finally pass it back to…
user3668556
- 55
- 3
- 12
0
votes
1 answer
Angular 2 - Sweet alert call back function not working
I am trying to delete an item in my angular cli app. I've used sweet alert as an alert and i want to delete an item from the list. Here is a code for that. This code is in typescript file.
import { AuthenticationService } from…
parth
- 624
- 1
- 10
- 29
0
votes
0 answers
Create a node with it's sub-nodes from more than 1 page anuglar4 and firebase
I am working on a markets application using angular 4 and I have an issue on adding a new category that contains nothing and the name of the category will be the uid of the sub items and each item contains some details of specific item.
On adding…
Bishoy Ezzat
- 159
- 1
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- 16
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votes
0 answers
How to use Interface or Model to access nested JSON in Angular2/4?
I am not able to map the nested json array from my local mock data. The json data is supposed to be like
{
success: true,
data: {
count: 2,
pageNo: 1,
pageSize: 10,
list: [
{
title: 'title',
subtitle: 'subtitle',
…
Nan Zhao
- 1
- 2
0
votes
0 answers
Application with angular 2 'Access-Control-Allow-Origin' Issue when requesting Restfull API
I trying make a Http request and this issue happens, but I just did the same request before and works, the only diference is the url.
the service file
import { Observable } from 'rxjs/Rx';
import { Http, Response } from '@angular/http';
import {…
hudjoubert
- 143
- 2
- 10
0
votes
2 answers
Observable in a callback function - angular 2
I am trying to implement a callback function in a service class, which has to return data back to the component class.
ChatComponent.ts
export class ChatComponent implements OnInit {
constructor( public _chatService : ChatService) {
…
Anish
- 2,889
- 1
- 20
- 45
0
votes
1 answer
Getting error for auth0-js not found Angular2
I am trying to create login for my angular2 app using auth0.
I am following the link below:-
https://auth0.com/docs/quickstart/spa/angular2
I did the following steps:-
Configure Callback URLs
Install auth0.js
npm install --save auth0-js
retrieve…
user8255292
0
votes
0 answers
How to convert angular 1 modal service into typescript angular 2?
I really would like to convert the following code to angular 2. Would it consist of writing alot of extra logic? Notice how this is simple and straight to the point.
I have a modal service
angular.module('app').service('myModalService', function…
CodeMan03
- 570
- 3
- 18
- 43
0
votes
1 answer
Can't resolve all parameters -getting this error in browser angular2
I am trying to create a movie finder website using api key .Everything looks perfect as far as code as well as the api key -i could access the values just by hitting the api request but getting error in browser.Appreciate if some one can help…
Code_1993
- 127
- 1
- 4
- 16
0
votes
1 answer
Execute method only once after all changes have happened in Observable in Angular ReplaySubject
I have created a service which checks for changes in parent component and send notifications to the child component.
Below is the simple service.
import { Injectable } from '@angular/core';
import { ReplaySubject } from 'rxjs/ReplaySubject';
import…
Joseph M Njuguna
- 417
- 1
- 4
- 9
0
votes
1 answer
angular 2+ refresh callback not working as expected
i have one issue with angular 2+ and typescript, i have 2 components and one service, what i need to achieve is when i open Modal(component) and do one action (in my case i do http.post) so when i click Add button inside modal i need to run another…
Sahbaz
- 1,242
- 4
- 17
- 39
0
votes
1 answer
How can i cache/preload all images of a Angular2 webapp?
i am developing a webapp and it is almost finished. The problem is that there are a lot of images at the assets folder and when i am navigating the screen sometimes blinks changing the webapp background images.
Is it possible to preload all the…
0
votes
1 answer
Angular 2 custom validator with service not working
I implemented angular custom validator which works if I hardcode the main logic this way
import { Directive, forwardRef } from '@angular/core';
import { NG_VALIDATORS, FormControl } from '@angular/forms';
import { UserAdministrationService } from…
kosnkov
- 5,609
- 13
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