Angular 8 - Displaying components inside of other components

Question

Problem:

To display (custom) Navigation component (titled topnav) in app.component.html

app.module.ts

   import { TopnavComponent } from './topnav/topnav.component';

   @NgModule({
         declarations: [
            AppComponent,
            TopnavComponent,
         ]
    })

*edited to show AppComponent inside of declarations

app.component.html

 <topnav></topnav>

SOLUTION

<app-topnav></app-topnav>

topnav.component.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-topnav',
  templateUrl: './topnav.component.html',
  styleUrls: ['./topnav.component.css']
})
export class TopnavComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

}

*edited to show topnav.component.ts

Not sure what I am missing here. I attempted to try different directives, importing and exporting in different ways. I know this is a basic idea behind Angular but having trouble and has been documented with Angular 2 but their solutions were not resolving in Angular 8.

Still getting this error:

1. If 'topnav' is an Angular component, then verify that it is part of this module.
2. To allow any element add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("
  <div class="container">

   [ERROR ->]<topnav></topnav>

  </div>
"): ng:///AppModule/AppComponent.html@4:3

When adding to imports:[] in app.module.ts, from my understanding only takes modules based on the error I was getting.

where is the AppComponent inside your declarations array — Aravind
– Aravind, Commented Sep 30, 2019 at 16:53
I omitted when copying over the code - it is in there. Edit to show true code. — Nick Kolodziej
– Nick Kolodziej, Commented Sep 30, 2019 at 16:56
added topnav component. the HTML file within the component is for all purposes just a string that says 'test' right now. I removed all other formatting to just get the component to show. — Nick Kolodziej
– Nick Kolodziej, Commented Sep 30, 2019 at 17:02
You are using the wrong selector. It should be <app-topnav></app-topnav> in app.component.html. — Archit Garg
– Archit Garg, Commented Sep 30, 2019 at 17:04

Archit Garg · Accepted Answer · 2019-09-30 17:07:33Z

1

You are using the wrong selector. Replace app.component.html with this:

 <app-topnav></app-topnav>

answered Sep 30, 2019 at 17:07

Archit Garg

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