you’re new to React, this post will walk you through all the fundamentals you need to get started . We’ll cover: ✔ What React is ✔ Components ✔ JSX ✔ Props & State ✔ Event Handling ✔ Conditional Rendering ✔ Lists & Keys ✔ A small demo Todo App By the end, you’ll have a solid foundation to start building apps in React 🚀. 1. ⚛️ What is React? Definition React is a JavaScript library for building user interfaces. It was developed by Facebook (Meta) and is widely used to build dynamic, fast, and interactive web applications . Explanation Traditional web apps: You manually update the DOM. React apps: React uses a virtual DOM → it calculates the minimal changes needed and updates the real DOM efficiently. Key Features Component-based → Build UI as small reusable blocks Declarative → You describe what the UI should look like One-way data flow → Data flows from parent → child via props Minimal React Starter (using CDN) <!doctype html> <html...
Explore advanced React, .NET, and performance optimization techniques—perfect for aceing technical interviews. Learn, practice, succeed!