Angular
10 Angular Tricks that will Blow your Mind
Angular is a powerful framework to develop dynamic and robust web applications. Most developers are now well aware of its basic features, but still, there are a number of advanced tricks and techniques that one can use to enhance productivity and performance. This blog features 10 Angular tricks that will blow your mind!
1. Know the Angular CLI Like a Pro
The Angular CLI is best friend for a developer. Apart from generating components, services, and modules, it also houses advanced commands such as:
ng updateng add @angular/materialng generate guard authThese commands speeds up your development, automates the update process, and smoothens the integration of third-party libraries with the barest minimum effort.
2. Use Angular Material
Angular Material provides you a bunch of high-quality ready-to-use components, compliant to Google's Material Design. Instead of painstakingly developing components from scratch, just bring in card, button, and dialog into your application with that polished component look.
3. Lazy Loading for Faster Performance
Angular lazy loading only loads those modules that are only needed at the time, ensuring a reduced initial load time of your application.
const routes: Routes = [{ path: 'feature', loadChildren: () => import('./feature/feature.module').then(m => m.FeatureModule) }];4. Use Resolver to Prefetch Data
Resolvers will get the required data before activating a route, ensuring that the loading component has all the necessary data upfront.
@Injectable({ providedIn: 'root' })export class DataResolver implements Resolve<DataType> {constructor(private dataService: DataService) {}resolve(route: ActivatedRouteSnapshot): Observable<DataType> {return this.dataService.getData();}}5. Angular Pipes for Smart Data Manipulation
Angular pipes allow you to transform data directly in your templates. You can create custom pipes for specific use cases, enhancing reusability and readability.
@Pipe({ name: 'capitalize' })export class CapitalizePipe implements PipeTransform {transform(value: string): string {return value.charAt(0).toUpperCase() + value.slice(1);}}6. Reactive Forms Suitable for Complex Validations
Neat: Instead of template-driven forms, go for Reactive Forms to have full control over validation and on-the-fly creation of forms.
this.form = this.fb.group({name: ['', [Validators.required, Validators.minLength(3)]]});7. Smart usage of Directives
Directives like *ngIf and *ngFor, as well as custom ones, can be used to manipulate the DOM perfectly well. You are even free to develop your custom structural and attribute directives to handle dynamic behaviors.
8. Take full benefit of Angular Services
Services help to share data between different components easily, and simply use them with Dependency Injection to make your code modular and maintainable.
9. Error Handling By Interceptors
HTTP Interceptors are the answers for the global handling, header attaching, or logging responses of your application. They work great for the management of authentication tokens or notification alerts for unsuccessful requests.
@Injectable()export class ErrorInterceptor implements HttpInterceptor {intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {return next.handle(req).pipe(catchError(error => {console.error('Error occurred:', error);return throwError(error);}));}}10. Optimize with OnPush Change Detection
Switch to the OnPush change detection strategy for performance-critical components to minimize unnecessary checks and provide a significant boost in performance, especially for bigger applications.
@Component({selector: 'app-my-component',changeDetection: ChangeDetectionStrategy.OnPush,template: '<p>{{ data }}</p>'})export class MyComponent {@Input() data: string;}Conclusion
These Angular tricks will make you a more proficient developer, but they will also help you build applications much faster and more robustly. It doesn't matter whether you are developing a huge enterprise project or a tiny side gig: these techniques are sure to enrich any developer's Angular experience. Happy Coding!
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