Course Content

React Mastery

1. Fundamentals of React and Component-Based UI

What Is React and Why Use It?Comparing SPAs and MPAs in Web Development How React Works with the Virtual DOM Introducing JSX for Writing HTML in JavaScript Building Complex UI with JSX Rendering Elements in React Challenge: Render an Element in React Understanding React Components Passing Data with Props in React Challenge: Create Functional Components Conditional Rendering in React Challenge: Implement Conditional Rendering – Chat Notification Challenge: Implement Conditional Rendering – Bank Alert Rendering Collections of Data in React Challenge: Display Data Collections in React React Fundamentals Wrap-Up

2. Styling Techniques in React Applications

Introduction to Styling in React Using Inline Styles in React Applying Inline Styles in Practice Challenge: Use Inline Styles in a React Component Styling React Components with External CSS Applying External CSS in Practice Challenge: Apply External CSS to a React App Using CSS Modules for Scoped Styling in React Organizing File and Folder Structures for Styles Challenge: Use CSS Modules in React Styling Techniques in React Wrap-Up

3. React Hooks and Context for State Management

Introduction to React Hooks and Context Managing State with the useState Hook Challenge: Toggle Visibility with useState Working with References Using the useRef Hook Challenge: Build a Controlled Form Component Handling Side Effects with the useEffect Hook Challenge: Fetch and Display Data with useEffect Optimizing Performance with the useMemo Hook Challenge: Implement a Car List Filter with useMemo Sharing State Across Components with Context Using Context in a Real-World Scenario Challenge: Build a World of Astronomy App with Context React Hooks and Context Wrap-Up

4. Structuring Real-World React Projects

Setting Up Your React Development Environment Choosing a Code Editor for React Development Organizing the Project Folder Structure Working with the Terminal in React Development Starting and Running a React Project with Vite React Project Setup Wrap-Up

How React Works with the Virtual DOM

In this chapter, we'll unravel how React does its magic with something called the Virtual DOM.

Virtual DOM vs. Browser DOM

Think of the Browser DOM as the blueprint of your web page. It's like a detailed map your browser uses to display your website. But here's the thing: updating this map directly can be slow. That's where the Virtual DOM comes in. React creates a quick sketch, a lightweight version of your web page's structure. It's like a draft that React can modify and optimize without messing with the heavy Browser DOM.

Components: The Puzzle Pieces

In React, everything revolves around components. Each part of your web page is like a puzzle piece. When something changes in your app, React updates these pieces. Here's how it happens:

State Changes: React knows it's time to update the pieces when something in your app changes;
Compute the Difference: React is smart. It figures out precisely what needs to change by comparing the old and new versions of the Virtual DOM;
Re-render: The Browser DOM gets involved only to make the necessary changes – nothing extra. Thanks to React's clever instructions, your web app stays quick and responsive, no matter how complex.

Now that you know how the Virtual DOM works, you're ready to dive deeper into React's world. In the upcoming chapters, we'll explore React's core concepts and practical applications, unlocking the full potential.

1. In React, what are the building blocks that encapsulate parts of your user interface?

2. What happens during the "Re-render" step in React's Virtual DOM process?

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 3

Ask AI

Ask anything or try one of the suggested questions to begin our chat