Ultimate React Course Notes

Jul 1, 2024

Ultimate React Course

Course Overview

  • Comprehensive and practical React course.
  • Suitable for beginners—no prior React knowledge needed.
  • By end of the course, you will be able to build fast and scalable apps.
  • Builds a production-grade app for discovering video games:
    • Features include dark/light modes, search, filtering, sorting, and dynamic page titles.
    • Advanced topics: routing, state management, data fetching, authentication, error handling, performance optimization.
  • Instructor: Marsha Madani, software engineer with over 20 years of experience.

Prerequisites

  • Good understanding of HTML, CSS, and JavaScript.
  • Familiarity with Typescript is recommended; will be covered in the course.

Introduction to React

  • React: JavaScript library for building dynamic and interactive user interfaces.
  • Created at Facebook in 2011.
  • Uses a tree structure called the Document Object Model (DOM) for managing web pages.
  • React components help create reusable, modular, and organized code.
  • React applications are composed of a tree of components.

Development Setup

  • Need Node.js version 16 or higher.
  • Recommended editor: Visual Studio Code (VS Code) with Prettier extension for code formatting.

Creating a React App

  • Tools: Create React App (CRA) or Veet.
    • Veet preferred due to speed and smaller bundle sizes.
  • Basic steps to create a project:
    • Terminal commands:
      • npm create veet@latest or specific version
      • cd project-name
      • npm install
      • code . to open project in VS Code
      • npm run dev to run the server

Project Structure

  • Key files and folders:
    • node_modules: Third-party libraries
    • public: Public assets like images, videos
    • src: Source code
    • index.html: Basic HTML template
    • package.json: Project details and dependencies
    • tsconfig.json: Typescript compiler settings
    • vite.config.js: Vite configuration

Creating and Using Components

  • Function-based components recommended.
  • JSX Syntax:
    • Write HTML/XML-like code within JavaScript.
    • Converts to JavaScript using Babel.
  • Creating a component:
    • File naming conventions (PascalCase)
    • Export and import components
    • Dynamic content with JSX
  • State Management with Hooks (useState)
  • Event Handling
    • onClick for click events
    • Handling complex logic within components
  • Making Components Reusable
    • Using props for passing data and handlers
    • Treat props as immutable
  • Rendering Lists Dynamically
    • map function for generating elements from arrays
    • Handling conditional rendering
  • Key Techniques:
    • Fragments for grouping elements
    • Prop destructuring
    • Conditional Unmounting

Styling and Libraries

  • Using Bootstrap for styling:
    • Installing Bootstrap
    • Importing Bootstrap in CSS
    • Using Bootstrap classes and components
  • Creating List and Button Components

Advanced Concepts

  • Props vs State
  • Event Handlers and State Changes
  • Conditional Rendering
  • Component Tree and Virtual DOM
  • React Dev Tools for debugging and inspection

Course Conclusion

  • Encouragement to enroll in the full course.
  • Full course features: 8 hours of content, exercises, summary notes, cheat sheets, production-grade project.
  • 30-day money-back guarantee.
  • Link to enroll in the complete course.