@Directive( selector: '[appTwice]' ) export class TwiceDirective implements OnChanges { @Input() appTwice: any;
Signals use a getter function syntax to read values and specific methods to update them: typescript
The Angular Interview Hacking curriculum focuses on topics that frequently trip up even experienced developers. Created by a , the course provides a database of over 90 popular interview questions. Core Pillars of the Prep Guide
excel at managing streams of asynchronous events, handling race conditions, and coordinating complex data pipelines over time.
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To stand out, you must demonstrate a deep understanding of Angular's core mechanics, particularly the features introduced in recent versions (Angular 16 through 21). Signals vs. RxJS
By focusing on these advanced topics, candidates can transition from just "knowing the framework" to demonstrating true technical leadership.
represent values that change over time. They are synchronous, always possess an initial value, and track dependencies automatically. Code Syntax and Usage
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ngOnInit() this.userService.getData().subscribe(...); // Bad
When an interviewer asks about performance, introduce NgZone immediately.
When you have a setTimeout inside a third-party library that Zone.js misses, force a local check:
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@Component( selector: 'app-standalone-button', standalone: true, imports: [CommonModule, MatIconModule], template: ` ` ) export class StandaloneButtonComponent {} Use code with caution. Full Client-Side Hydration
<!-- Old --> <div *ngIf="isLoggedIn">Welcome</div>
// This can't be done with a constructor function provideFeatureFlag() const config = inject(APP_CONFIG); return config.flags.featureX;