React and Redux Training Overview
React is a JavaScript library for building web user interfaces and is one of the most wanted and loved web frameworks today. React makes it painless to create interactive UIs on top of web standards and is often used with the Redux library for managing the data or state in a React application.
In this React course, students learn how to get the most out of the latest version of React and the tools for developing React applications. Developers learn the skills they need to immediately use React and Redux in their applications using JavaScript/ECMAScript.
Note: This React class can also be taught using TypeScript.
Please see this quick course overview video including a demo of the hands-on coding students do in class to reinforce the concepts.
Location and Pricing
Accelebrate offers instructor-led enterprise training for groups of 3 or more online or at your site. Most Accelebrate classes can be flexibly scheduled for your group, including delivery in half-day segments across a week or set of weeks. To receive a customized proposal and price quote for private corporate training on-site or online, please contact us.
In addition, some courses are available as live, instructor-led training from one of our partners.
Objectives
- Use a JavaScript package manager (either npm or Yarn)
- Quickly understand the new JavaScript language features, including classes, modules, and arrow functions
- Articulate what React is and why it is useful
- Explore the basic architecture of a React application
- Gain a deep understanding of JSX and the Virtual DOM
- Use React components to build interactive interfaces
- Create and validate forms using controlled components
- Make HTTP calls to read or change data
- Explore the common component architecture patterns
- Configure simple and complex routing
- Understand state management including when it is needed and the various alternatives
- Utilize Redux to manage the state of the application
- Use React and Redux together
- Implement React and Redux best practices
- Write unit tests for React using Jest and React Testing Library
Prerequisites
Students must have object-oriented programming experience. Some experience with JavaScript is helpful; the new language features of JavaScript and TypeScript are covered/reviewed in class.
Outline
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Introduction
Package Manager (npm/Yarn)
- npm
- What is Node.js?
- What is npm?
- Using npm
- npm Scripts
- Yarn
- Why Yarn?
- npm vs. Yarn
- Installation
- Using Yarn
ES6/ES2015
- Classes
- Scope (var, let, const)
- Arrow Functions
- Modules
- Template Literals
- Default, Rest, Spread
- Default
- Rest
- Spread
- Destructuring
- Optional Parameters
- Object.assign()
- Object Initializer
Project Setup (Create React App)
- Create new Project
- Folder Structure
- Browser Support
- Styles and Assets
- Dependencies
Best Practices (Code Organization & Conventions)
React Overview
- Why React?
- What it is?
- Why it is useful?
- Angular, React Compared
- Web application architectures
- Server-side web application architecture
- Single-page web application architecture
- React Architecture
Elements
- Hello World in JavaScript
- Hello World in React
JSX
- Replacing createElement
- Embedding Expressions
- Specifying Attributes
Virtual DOM
Components
- Creating an Element
- Create a Function Component
- Rendering a Component
- Creating a Class Component
- Composing & Reuse
Props
- Read-only
- String Literals vs. Expressions
- Function vs. Class Components
Events
- Listening/Subscribing/Wiring to an Event
- In Vanilla JavaScript
- In React: Function Component
- In React: Class Component
- Binding
- Why Binding is Necessary?
- Class Method
- Arrow Function
- Passing Parameters
- Using Arrow Functions
- Using Bind
- Handling Events
- Using Arrow Functions
- Using Bind
- Synthetic Events
Hooks
- Definition
- Why Hooks?
- No Breaking Changes
- Hooks API: useState, useEffect, useRef, useContext
- Rules of Hooks
State
- Definition
- State in Function Components
- useState Hook
- State in Class Components
- Mutating state with setState
- Using State Correctly
- Data Flows Down
Side Effects & Lifecycle
- useEffect Hook
- What does useEffect do?
- Using useEffect
- useEffect Demo
- What are Lifecycle Methods
- Understanding Mounting
- Common vs. Less Common Methods
- Using Lifecycle Methods
Conditional Rendering
- If, else
- Conditional Operator (?)
- Logical (&&) Operator
Lists
- In Vanilla JavaScript: for loop, array.forEach, array.map
- In React: using Elements, Components
- Why Keys are Needed
Component Architecture
- Reuse
- Component Communication
- Design Patterns
- Container and Presentation Components
- Composition vs. Inheritance
Forms
- Controlled Components
- Reuse of Change Logic across Multiple Inputs
- Handling Form Submission
- Controlling Other Form Elements: select, textarea, number
- Validation
- Uncontrolled Components
HTTP
- Axios library
- Fetch API
- Using with React (HTTP GET)
- Refactoring for Reuse
- HTTP POST, PUT, DELETE
Routing (React Router)
- Installation
- Basics
- Handling Not Found (404)
- Parameters (Url & Query)
- Nesting
Build & Deploy
- Building a React Application for Production
- Deploying a React Application
- Serving Apps with Client-Side Routing
- Customizing Environment Variables
Custom Hooks
- Background
- Definition
- Reuse of stateful logic
Context
- When to use Context
- useContext Hook
State Management
- What is State?
- When do you need Redux?
- Alternatives to Redux
- Using Context for Shared State
- Server State: React Query, SWR, or GraphQL client
Redux
- What is Redux?
- What is State?
- Benefits Checklist
- Principles of Redux
- Core Concepts (Store, State, Reducers, Actions, Action Creators)
- Complementary Packages
- When do you need Redux?
- Basic Redux Example (includes time traveling)
- Gotchas/Tips
Using Redux with React (React Redux Library)
- Redux with React in Function Components
- useSelector and useDispatch Hooks
- Provider
- Example
- Redux with React in Class Components
- Higher-Order Components
- The connect function
- Writing mapState functions
- Writing mapDispatch Functions
- Example
Asynchronous Actions (Redux Thunk)
- Overview
- Async Actions (Thunks)
- Installation
- Your First Thunk
- Full CRUD Example
Putting It All Together (React & Redux & Thunk)
Testing
- Tools (Jest, React Testing Library or Enzyme)
- Syntax
- Testing Vanilla JavaScript with Jest
- Mocking
- Mocking Modules
- Mocking Functions
- Debugging Tests
- Component Tests with React Testing Library
- Component Tests with Enzyme
- Testing Redux Actions & Thunks, Reducers, HTTP
Optional Topics/FAQ (if time permits)
- Styling
- Using Classes
- Using Styles
- CSS in JS Overview
- Performance
- What causes a component to render?
- Wasted Renders
- Memoization
- React.memo
- Pure Components
- Advanced Components
- Higher-Order Components
- Render Props
Conclusion
Training Materials
All attendees receive comprehensive courseware.
Software Requirements
- Google Chrome and/or Firefox
- Other modern browsers as desired
- IDE/development environment of your choice
- Other free software and lab files that Accelebrate would specify, including Node.js
Please see this short video for an overview of the course including a quick look at demos and labs.
