🎯 Introduction

As an Angular developer, you probably know the basics. But real pros know these advanced tricks that can boost your app's performance and make your code cleaner.

✅ 1. Change Detection Optimization

Angular's default change detection can slow down your app. Use ChangeDetectionStrategy.OnPush to optimize performance.

@Component({
  selector: 'app-my-component',
  changeDetection: ChangeDetectionStrategy.OnPush
})

🔥 This ensures Angular only checks for changes when the input reference changes, not on every event.

✅ 2. Custom Directives in PrimeNG

You can create custom directives to modify PrimeNG components.

@Directive({ selector: '[customStyle]' })
export class CustomStyleDirective {
  constructor(private el: ElementRef) {
    this.el.nativeElement.style.backgroundColor = 'lightblue';
  }
}

✅ 3. RxJS Debou/cnce for API Calls

To prevent multiple API hits when users type in a search bar:

this.searchInput.pipe(
  debounceTime(300),
  distinctUntilChanged(),
  switchMap(value => this.apiService.search(value))
).subscribe();

✅ 4. Lazy Loading with Angular Routes

Improve loading time by lazy loading modules.

In app-routing.module.ts:

{ path: 'dashboard', loadChildren: () => import('./dashboard/dashboard.module').then(m => m.DashboardModule) }

✅ 5. Using Angular Signals (New Feature)

Angular Signals are the future of state management.

import { signal, computed } from '@angular/core';

const count = signal(0);
const doubleCount = computed(() => count() * 2);

✅ 6. Angular State Management with NgRx

Manage complex state using NgRx Store.

store.dispatch(increment());
store.select(selectCount).subscribe(count => console.log(count));

✅ 7. Building a Reusable Component Library

Create your own UI library for SaaS products.

ng generate library my-component-library

🎯 Conclusion

These 7 advanced Angular tricks will help you build faster, cleaner, and more scalable apps.

🔥 Which one are you using next? Comment below

🚀 7 Advanced Angular Tricks Only Experienced Developers Know (You Won't Find These in Docs)