feat(21-anchor-navigation): implement anchor navigation with smooth s…

…crolling

apps/angular/21-anchor-navigation/src/app/app.component.ts

@@ -6,7 +6,7 @@ import { RouterOutlet } from '@angular/router';
   imports: [RouterOutlet],
   selector: 'app-root',
   template: `
-    <router-outlet></router-outlet>
+    <router-outlet />
   `,
 })
 export class AppComponent {}

apps/angular/21-anchor-navigation/src/app/app.config.ts

@@ -1,6 +1,15 @@
 import { ApplicationConfig } from '@angular/core';
-import { provideRouter } from '@angular/router';
+import { provideRouter, withInMemoryScrolling } from '@angular/router';
 import { appRoutes } from './app.routes';
+
 export const appConfig: ApplicationConfig = {
-  providers: [provideRouter(appRoutes)],
+  providers: [
+    provideRouter(
+      appRoutes,
+      withInMemoryScrolling({
+        scrollPositionRestoration: 'enabled',
+        anchorScrolling: 'enabled',
+      }),
+    ),
+  ],
 };

apps/angular/21-anchor-navigation/src/app/foo.component.ts

@@ -7,7 +7,9 @@ import { NavButtonComponent } from './nav-button.component';
   selector: 'app-foo',
   template: `
     Welcome to foo page
-    <nav-button href="home" class="fixed left-1/2 top-3">Home Page</nav-button>
+    <nav-button route="/home" class="fixed left-1/2 top-3">
+      Home Page
+    </nav-button>
     <div class="h-screen bg-blue-200">section 1</div>
     <div class="h-screen bg-red-200">section 2</div>
   `,

apps/angular/21-anchor-navigation/src/app/home.component.ts

@@ -6,14 +6,15 @@ import { NavButtonComponent } from './nav-button.component';
   imports: [NavButtonComponent],
   selector: 'app-home',
   template: `
-    <nav-button href="/foo" class="fixed left-1/2 top-3">Foo Page</nav-button>
+    <nav-button route="/foo" class="fixed left-1/2 top-3">Foo Page</nav-button>
+
     <div id="top" class="h-screen bg-gray-500">
       Empty
-      <nav-button href="#bottom">Scroll Bottom</nav-button>
+      <nav-button fragment="bottom">Scroll Bottom</nav-button>
     </div>
     <div id="bottom" class="h-screen bg-blue-300">
       I want to scroll each
-      <nav-button href="#top">Scroll Top</nav-button>
+      <nav-button fragment="top">Scroll Top</nav-button>
     </div>
   `,
 })

apps/angular/21-anchor-navigation/src/app/nav-button.component.ts

@@ -1,17 +1,23 @@
 /* eslint-disable @angular-eslint/component-selector */
-import { Component, Input } from '@angular/core';
+import { Component, input } from '@angular/core';
+import { RouterLink } from '@angular/router';
+
 @Component({
   selector: 'nav-button',
   standalone: true,
+  imports: [RouterLink],
   template: `
-    <a [href]="href">
-      <ng-content></ng-content>
+    <a
+      [routerLink]="route()"
+      [fragment]="fragment() === '' ? undefined : fragment()">
+      <ng-content />
     </a>
   `,
   host: {
     class: 'block w-fit border border-red-500 rounded-md p-4 m-2',
   },
 })
 export class NavButtonComponent {
-  @Input() href = '';
+  route = input('');
+  fragment = input('');
 }

apps/angular/21-anchor-navigation/src/styles.scss

@@ -3,3 +3,6 @@
 @tailwind utilities;
 
 /* You can add global styles to this file, and also import other style files */
+html {
+  scroll-behavior: smooth;
+}