Angular Signals Explained
Learn Angular Signals with practical examples — reactivity, computed values, effects, and how they change change-detection.
Sachin Gangwar
Technical Blog
Deep-dives on Angular, JavaScript & modern web development
Tutorials, interview preparation and engineering notes — 12 articles and growing.
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Top Frontend Interview Questions (With Answers)
A curated set of frontend interview questions across JavaScript, CSS, the browser and frameworks — with concise, correct answers you can actually recall.
Sachin Gangwar
Angular Change Detection & OnPush Explained
Understand how Angular decides what to re-render, and how OnPush plus signals make your apps dramatically faster.
Sachin Gangwar
JavaScript Closures, Scope & the Event Loop
Master three JavaScript concepts that every interview tests — closures, scope chains, and how the event loop schedules your code.
Sachin Gangwar
Build a REST API with NestJS & Node.js
A practical, from-scratch guide to structuring a production-ready REST API using NestJS — controllers, services, DTOs and validation.
Sachin Gangwar
React vs Angular — Which Should You Learn in 2026?
An honest, practical comparison of React and Angular in 2026 to help beginners and career switchers pick the right first framework.
Sachin Gangwar
TypeScript Utility Types You'll Actually Use
A practical tour of the TypeScript utility types that make your code safer and shorter — Partial, Pick, Omit, Record, Readonly and more.
Sachin Gangwar
JavaScript Array Methods Cheat Sheet (map, filter, reduce)
Stop reaching for for-loops — a practical cheat sheet of the JavaScript array methods you'll use every day, with clear examples.
Sachin Gangwar
RxJS Operators Explained (map, switchMap, debounceTime & more)
The RxJS operators every Angular developer must know, explained with practical examples — including the classic type-ahead search pattern.
Sachin Gangwar
React Hooks for Beginners — useState vs useEffect
Understand the two hooks you'll use most in React — useState for state and useEffect for side effects — with clear, correct examples.
Sachin Gangwar
CSS Flexbox vs Grid — When to Use Which
Stop guessing between Flexbox and Grid. A clear, practical rule plus copy-paste examples for the layouts you build most often.
Sachin Gangwar
JWT Authentication in NestJS — A Practical Guide
Add secure, stateless authentication to a NestJS API with JSON Web Tokens — login, a Passport JWT strategy, and route guards.
Sachin Gangwar