Angular is a TypeScript-based framework for building dynamic, single-page applications (SPAs). Maintained by Google, released in 2016 (Angular 2+), distinct from AngularJS. Key features includes components, two-way data binding, dependency injection, and CLI.
If you’re looking for an Angular Tutorial, you should focus on key concepts, coding challenges, and real-world application scenarios. Here’s a breakdown of the important Angular Concepts you should be ready for:
1. Basics & Core Concepts
- What is Angular, and how is it different from AngularJS?
- Explain the architecture of Angular.
- What are components in Angular?
- What are modules in Angular, and why are they important?
- What is TypeScript, and why does Angular use it?
2. Components & Templates
- What is the difference between a component and a directive?
- How do you pass data between components in Angular?
- What are lifecycle hooks in Angular? Can you name a few?
- What is ViewEncapsulation in Angular?
- What is the role of the
ng-contentdirective?
3. Directives & Pipes
- What is the difference between structural and attribute directives?
- Explain the usage of
ngIf,ngFor, andngSwitch. - How do you create a custom directive in Angular?
- What are pipes in Angular, and how do you create a custom pipe?
- Difference between pure and impure pipes?
4. Services & Dependency Injection
- What is a service in Angular?
- What is Dependency Injection (DI) in Angular?
- What are the different types of dependency injection in Angular?
- Explain the purpose of
providedIn: 'root'.
5. Routing & Navigation
- How does Angular handle routing?
- What are route guards? Name different types.
- What is lazy loading in Angular?
- How do you pass parameters to a route?
6. Forms & Validation
- What is the difference between Template-Driven and Reactive Forms?
- How do you implement form validation in Angular?
- What is the purpose of FormBuilder?
7. Observables & RxJS
- What is RxJS? Why is it used in Angular?
- Difference between Observables and Promises?
- What are Subjects and BehaviorSubjects?
- Explain operators like
map,switchMap,mergeMap, andforkJoin.
8. State Management
- How do you manage state in Angular applications?
- What is NgRx? How does it work?
- What is BehaviorSubject, and how can it be used for state management?
9. Performance Optimization
- How do you optimize the performance of an Angular application?
- What is Change Detection, and how does it work?
- What are OnPush Change Detection Strategies?
- How do you use trackBy in *ngFor to optimize rendering?
10. Security & Best Practices
- How does Angular handle security?
- What is Cross-Site Scripting (XSS), and how does Angular prevent it?
- What is Content Security Policy (CSP)?
11. Unit Testing & Debugging
- How do you write unit tests in Angular?
- What is Karma and Jasmine?
- What is TestBed in Angular testing?
- How do you debug Angular applications?
12. Advanced Topics
- What is Angular Universal?
- What is a Web Worker in Angular?
- How do you use IndexedDB or LocalStorage in Angular?
- What is Server-Side Rendering (SSR)?