Angular 10 - Components

A component is one of the rudimentary building blocks of an Angular app. An app can have more than one component. In a normal app, a component contains an HTML view page class file, a class file that controls the comportment of the HTML page, and the CSS/SCSS file to style your HTML view. A component that can be engendered utilizing the @Component decorator that is a component of the @angular/core module.

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

To create the component,

ng g c knf_demo_component

Now, if we go and check the file structure, we will get the knf_demo_component new folder created under the src/app folder.

The following files are created in the knf_demo_component folder −

knf-demo-component.component.css
knf-demo-component.component.html
knf-demo-component.component.spec.ts
knf-demo-component.component.ts

Changes are added to the app.module.ts file as follows −

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { KnfDemoComponentComponent } from './knf-demo-component

          /knf-demo-component.component';

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

The new knf-demo-component.component.ts file is generated as follows −,

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

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

  constructor() { }

  ngOnInit(): void {
  }

}