Pulling information from a JSON file using Angular 2

Is there a way to extract data from a JSON file in an Angular 2 project? I attempted the following code snippet, but it seems to be ineffective. Perhaps I missed some important details... any guidance would be greatly appreciated.

Additionally, I aim to showcase the value "uno" from the JSON file on my HTML page.

In app.component.ts:

     import { Component } from '@angular/core';
     import { Http } from '@angular/http';

    @Component({
        selector: 'app-header',
        templateUrl: '../partials/app.header.html',
        styleUrls: ['../css/partials/app.header.css']
    })
        export class AppComponent {
          title = 'app works!';
          data;
          constructor(private http:Http) {
                this.http.get('app/header.json')
               .subscribe(res => this.data = res.json());
          }
        }

In app.module.ts:

    import { BrowserModule } from '@angular/platform-browser';
    import { NgModule } from '@angular/core';
    import { FormsModule } from '@angular/forms';
    import { HttpModule } from '@angular/http';
    import { AppComponent } from './app.component';

    @NgModule({
      declarations: [
        AppComponent
      ],
      imports: [
        BrowserModule,
        FormsModule,
        HttpModule
      ],
      providers: [],
      bootstrap: [AppComponent]
    })
    export class AppModule { }

In app.header.html:

<header>
    {{title}}//this works
    {{elemento}}//here i want to show "uno" included in json file
    ...
</header>

The contents of header.json are as follows:

    {
        "elemento": "uno" 
    }

Answer №1

simply follow these steps

{{info?.item}}

Answer №2

Simply perform,

<header>
    {{title}}
    {{data?.elemento}}
</header>

Answer №3

To implement the get method, you should utilize the RX js observable pattern. Here is an example of how to do it:

   import { Component } from '@angular/core';
     import {Http} from '@angular/http';
     import * from rxjs;

    @Component({
        selector: 'app-header',
        templateUrl: '../partials/app.header.html',
        styleUrls: ['../css/partials/app.header.css'],
        providers:[]
    })
       
  export class AppComponent {
          title = 'app works!';
          data :any;
          constructor(private http:Http) {
                this.http.get('app/header.json')
               .subscribe(res => this.data = res.json())
                .map((res: Response) => <observable[]>response.json())            
                            .catch(this.handleError);
          }
        }
 
<header>
    {{title}}
    {{data?.elemento}}
</header>

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