Posts

Angular 21 - Questions & Explanation(20/3/2026)

Angular 21 - Questions & Explanation 🚀 Angular 21 - Questions, Answers & Diagrams Q1: What are Signals in Angular 21? Answer: Signals are a new reactive way to manage state without RxJS. count = signal(0); count.update(v => v + 1); flowchart LR User --> UpdateSignal --> UIUpdate Q2: What is Zoneless Change Detection? Answer: Angular 21 removes dependency on zone.js for better performance. flowchart TD UserAction --> SignalChange --> UIRefresh Q3: What are Signal Forms? Answer: New way to handle forms using signals instead of reactive forms. name = signal(''); flowchart LR Input --> Signal --> UI Q4: What are Computed Signals? Answer: Derived values that auto-update when base signal changes. total = computed(() => price() + tax()); flowchart LR Price --> Compute --> Total Tax --> Compute Q5: What are Standalone Components? Answer: Components without NgModules. @C...
Post a Comment
Read more

Angular 21 Features (20/3/2026)

Angular 21 Features 🚀 Angular 21 Features with Examples 1. Signal State Management Simple reactive state without RxJS. import { signal } from '@angular/core'; count = signal(0); increment() { this.count.update(v => v + 1); } graph LR A[User Click] --> B[Signal Update] B --> C[UI Auto Update] 2. Zoneless Change Detection No zone.js required → faster performance. flowchart TD A[User Action] --> B[Signal Change] B --> C[Component Updates] 3. Signal Forms Modern reactive forms using signals. name = signal(''); updateName(val) { this.name.set(val); } graph TD Input --> Signal --> UI 4. Computed Signals price = signal(100); tax = computed(() => this.price() * 0.1); graph LR Price --> Compute --> Tax 5. Standalone Components @Component({ standalone: true, selector: 'app-test', template: `Hello Angular` }) graph TD App --> Component 6. Faster Testing (V...
Post a Comment
Read more

question bank

Top 20 Angular Interview Questions & Answers (2025 Edition) Top 20 Angular Interview Questions & Answers (2025 Edition) Prepare for your next Angular developer interview with these key concepts. Angular Questions and Answers 1. What is Angular? Angular is a front-end web application framework developed by Google. It’s built on TypeScript and is used to create single-page applications (SPAs). It provides features like dependency injection, data binding, routing, and component-based architecture. 2. What’s new in Angular 17–18 (2025 updates)? Angular 17 introduced deferrable views , signal-based reactivity , and faster build performance . Angular 18 (expected in 2025) focuses on better integration with modern JavaScript runtimes and smaller bundle sizes. 3. What is a Component in Angular? A Component is the basic building block of Angular apps. It controls a part of the user in...
Post a Comment
Read more

Why Use an Interceptor?

Understanding Interceptors in Angular Understanding Interceptors in Angular A simple guide for beginners 🔍 What is an Interceptor? In Angular, an Interceptor is like a middleman between your app and the server. Whenever you make an HTTP request, the interceptor can see , modify , or even stop it before it goes to the server. It also works the other way — when the server sends a response back, the interceptor can inspect or modify it before your app receives it. Think of it like a security guard who checks every request and response going in or out of your app. Your App → Interceptor → Server Server → Interceptor → Your App ⚙️ Why Use an Interceptor? Add an authentication token to every request automatically Show or hide a loading spinner while waiting for data Handle errors globally (e.g., “Server not available” messages) Log requests and respo...
Post a Comment
Read more