Comprehensive frontend framework developed by Google with TypeScript as primary language. Component-based modular architecture, native Dependency Injection, RxJS for reactive programming and robust CLI to build scalable and maintainable web applications.
Strict TypeScript with decorators and advanced types (@Component, @Injectable)
Modular architecture with NgModules and lazy loading
Hierarchical Dependency Injection with providers and scopes
RxJS for reactive programming (Observables, Operators, Subjects)
Powerful template syntax (data binding, directives, pipes)
Robust forms (Template-driven and Reactive Forms with validation)
Advanced Router with guards, resolvers, lazy loading and preloading
HttpClient with interceptors, caching and error handling
Signals for reactive state management (Angular 16+)
Comprehensive testing (Jasmine, Karma, TestBed, mocking, E2E with Cypress)
The most important concepts to understand this technology and ace your interviews
TypeScript: decorators, advanced types, interfaces, generics
Components: templates, styles, lifecycle hooks, ViewChild, ContentChild
Data binding: interpolation, property binding, event binding, two-way binding
Directives: structural (*ngIf, *ngFor, *ngSwitch), attribute (ngClass, ngStyle), custom
Pipes: built-in (date, async, json), custom pipes, pure vs impure
Services and Dependency Injection: providers, hierarchical DI, injection tokens
RxJS: Observables, Operators (map, filter, switchMap, mergeMap), Subjects, unsubscribe
Forms: Template-driven vs Reactive, FormControl, FormGroup, validators, async validators
Routing: routes, RouterLink, RouterOutlet, guards (CanActivate, CanDeactivate), resolvers
HttpClient: GET/POST/PUT/DELETE, interceptors, error handling, retry logic
Change Detection: strategies (Default, OnPush), zones, manual triggering
NgModules: imports, exports, declarations, providers, lazy loading
Signals: signal(), computed(), effect(), reactive state (Angular 16+)
State management: Services with BehaviorSubject, NgRx (Store, Effects, Selectors)
Testing: unit tests (Jasmine, TestBed), component testing, service mocking, E2E
Performance: OnPush, trackBy, lazy loading, preloading strategies, bundle optimization
Angular CLI, build configuration, deployment, SSR with Angular Universal
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