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Adding a new view

In this tutorial you will learn how to create a new view in your application and how to access it using a defined endpoint.

Every application developed in Angular is a single page application where the concepts of view and routing play a key role in the user experience. Being a single page application, the navigation between the different layouts (called views) is enabled through the routing.

Creating a view

In an Angular application, a view is implemented by a regular component. A view can use other views (ie, other components) but a view can also be used to implement the full layout of your application. This is the reason why creating a view is not necessarily the same task as creating a component.

To create a view, run the following command in a terminal from the root of your project:

ng generate component my-first-view

For further details about creating a component, refer to the tutorial here.

Routing the view

An Angular application has one singleton instance of the Router service that is used to match the browser's URL with the corresponding component to display. The Router service must be configured in a Typescript file with a syntax similar to the following source code.

import { Routes, RouterModule } from '@angular/router';

const appRoutes: Routes = [
  { path: 'path-in-the-app', component: ExistingComponent },
  { path: '**', component: PageNotFoundComponent }

  imports: [
      { enableTracing: true } // <-- debugging purposes only.
    // other imports here

To add the new view to the routing, change the appRoutes constant as follows:

const appRoutes: Routes = [
  { path: 'path-in-the-app', component: ExistingComponent },
  { path: 'my-first-view', component: MyFirstViewComponent }, // <-- Add this!
  { path: '**', component: PageNotFoundComponent }

And remember to import the component in the same file with the following syntax.

import { MyFirstViewComponent } from './my-first-view/my-first-view.component';

Be aware that the Router service can be declared in a file that can be stored in different places in the application's structure. Usually, the Router service is declared in a location close to the file containing the root module.

Testing the view

To render the new view through the application and check the user experience, restart the application and open a browser at the following URL:


The result should be a very simple page with the following content.

my-first-view works!

View parameters (optional)

In most use cases, you will want to add parameters to the view's endpoint. To enable this, change the appRoutes constant as follows:

const appRoutes: Routes = [
  { path: 'path-in-the-app', component: ExistingComponent },
  { path: 'my-first-view/:name', component: MyFirstViewComponent }, // <-- Change this!
  { path: '**', component: PageNotFoundComponent }

Then open the Typescript controller for the MyFirstViewComponent stored in src/app/my-first-view (my-first-view.component.ts). You need to add a few things here:

  1. We need to import and inject the router into the class.
  2. Subscribe to the router parameters and fetch the value.
  3. Unsubscribe to the router parameters.

While #3 isn't strictly required, it would eventually cause a memory leak in your application, so please remember to unsubscribe!

Modify the typescript controller my-first-view.component.ts to look like this:

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

  selector: 'app-my-first-view',
  templateUrl: './my-first-view.component.html',
  styleUrls: ['./my-first-view.component.scss']
class MyFirstViewComponent implements OnInit {

  private params: any;
  name: String;

  constructor(private route: ActivatedRoute) { }

  ngOnInit() {
    this.params = this.route.params.subscribe(params => {
      this.name = params['name'];

  ngOnDestroy() {

Next open the template my-first-view.component.html in the same folder and add the greeting as in the following source code.

      Hello {{ name }}

You can now navigate to http://<ip_address>:<port>/my-first-view/sir and see the nice message "Hello sir".

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