componente dont be display

[wet island]

i make with ng g c test and will in the index file with <app-test></app-test> use. but no error and the side is empty.

[opal stream]

By index file, you mean the index.html?

[wet island]

yes

[opal stream]

That's not how angular works.
There is only the app root there as the root content.

You need to use it to display content, use app test in app.component.html

[wet island]

Ah, thank you very much. Now I have a question about understanding. Unlike in the app.component.html file, can't it be done that way? So, do all templates have to go through it, or how is that to be understood?"

[opal stream]

The best answer go through the official tutorial, it'll provide you with basic understanding about how to display components in multiple different ways: https://angular.io/tutorial/tour-of-heroes