Install Angular Router (already included if you use Angular CLI)

If you generated your project with:

ng new my-app --routing

then Angular Router is already set up.

If not, you just need to manually configure it — no extra installation required!

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🏗 2. Create Components

You need components to route to. Example:

ng generate component home
ng generate component about

This creates HomeComponent and AboutComponent.

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📜 3. Define Routes

Edit your app-routing.module.ts (or create it if missing):

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './home/home.component';
import { AboutComponent } from './about/about.component';

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'about', component: AboutComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

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🛠 4. Import Router Module in AppModule

Ensure you import AppRoutingModule in your app.module.ts:

import { AppRoutingModule } from './app-routing.module';

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

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🖼 5. Setup Router Outlet in Template

In app.component.html, add:

<router-outlet></router-outlet>

This is where your routed components will be displayed.

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🔗 6. Navigation Links

Use routerLink to navigate:

<nav>
  <a routerLink="/">Home</a> |
  <a routerLink="/about">About</a>
</nav>

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⚡ Bonus (Optional)

Wildcard Route (for 404 pages):

{ path: '**', redirectTo: '' }

Route Parameters (e.g., /product/1):

{ path: 'product/:id', component: ProductComponent }

You can then access the id via ActivatedRoute inside ProductComponent.

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✅ Summary:
You configure routes → add <router-outlet> → navigate with routerLink.