How do you declare a component in Angular?

AngularJunior~1 min read

In Angular, a component is declared using the decorator @Component above a class. A simple example:

typescript

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

@Component({
  selector: 'app-my-component',   // tag name used in the template
  templateUrl: './my-component.component.html', // path to the HTML template
  styleUrls: ['./my-component.component.css']   // path to the styles
})
export class MyComponent {
  title = 'Component example';
}

After that, the component needs to be added to the declarations array of the module (NgModule) so that Angular recognizes it:

typescript

@NgModule({
  declarations: [MyComponent],
  imports: [...],
  bootstrap: [AppComponent]
})
export class AppModule { }

Now the component can be used in templates via the tag <app-my-component></app-my-component>.

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