Tips for verifying the results of a specific element on a webpage using Angular

Hello all, I am currently learning Angular and facing an issue related to components. I have successfully created a component named "test".

When I execute the code, I get the desired output. However, if I remove the tag from app.component.html, I end up with a blank webpage.

Below is the code for test.component.ts:

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

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

  constructor() { }

  ngOnInit(): void {
  }

}

Here is the content of test.component.html:

test is working

And here is the content of app.component.html:

<app-test></app-test>

I would appreciate any guidance on where I might be going wrong. Do I need to include the selector tag of every component in the app.component.html file (root HTML code)?

Answer №1

By including the component tag in the app.component.html file, you are instructing the angular compiler to display that specific component on your website. When you remove the tag, the compiler has no instructions on what to render, resulting in a blank page being shown.

There is no mistake on your end, you simply need to determine which components you want to display on the page.

It is important to include the selector tag for each component not only in the app.component.html file, but also wherever you want it to be displayed.

If needed, Angular routing can be utilized to conditionally display components using routing. You can refer to this link for more information: https://angular.io/guide/router

Answer №2

Ensuring the inclusion of the selector () in app.component.html is crucial. This allows components to be visible or hidden as needed.

Similar to defining routes for a project, including router-outlet in the main component is essential.

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