The useCallback Hook

React - The Complete Guide (incl Hooks, React Router, Redux)

Getting Started

Welcome to the Course (1:08)
What Is React? And Why Would You Use It? (2:58)
ReactJS vs Vanilla JavaScript (10:57)
Editing Our First React App (4:22)
About the Course (2:55)
One Course, Two Paths (3:08)
How To Get The Most Out Of This Course (5:24)
Join Our Online Learning Community
How To Create New React Projects (7:10)
Why Do We Need A Special Project Setup? (2:51)

JavaScript Refresher

Module Introduction (1:49)
Starting Project (1:00)
Adding JavaScript To A Page & How React Projects Differ (6:57)
React Projects Use a Build Process (8:04)
"import" & "export" (12:04)
Revisiting Variables & Values (7:01)
Revisiting Operators (2:33)
Revisiting Functions & Parameters (8:14)
Arrow Functions (2:11)
Revisiting Objects & Classes (6:07)
Arrays & Array Methods like map() (11:10)
Destructuring (5:16)
The Spread Operator (3:13)
Revisiting Control Structures (5:28)
Manipulating the DOM - Not With React! (0:52)
Using Functions as Values (7:22)
Defining Functions Inside Of Functions (1:55)
Reference vs Primitive Values (4:45)
Next-Gen JavaScript - Summary
JS Array Functions

React Essentials - Components, JSX, Props, State & More

Module Introduction (1:48)
It's All About Components! [Core Concept] (6:07)
Setting Up The Starting Project (3:06)
JSX & React Components [Core Concept] (4:42)
Creating & Using a First Custom Component (5:52)
A Closer Look: Components & File Extensions
How React Handles Components & How It Builds A "Component Tree" [Core Concept] (8:21)
Quiz: Components & JSX
Using & Outputting Dynamic Values [Core Concept] (6:01)
Setting HTML Attributes Dynamically & Loading Image Files (4:42)
Making Components Reusable with Props [Core Concept] (9:06)
Alternative Props Syntaxes (6:44)
More Prop Syntaxes
Quiz: Dynamic Values & Props
Best Practice: Storing Components in Files & Using a Good Project Structure (6:32)
Storing Component Style Files Next To Components (6:15)
Component Composition: The special "children" Prop [Core Concept] (8:06)
Reacting to Events [Core Concept] (6:45)
Passing Functions as Values to Props (6:43)
Passing Custom Arguments to Event Functions (5:36)
Quiz: Best Practices & Event Handling
How NOT to Update the UI - A Look Behind The Scenes of React [Core Concept] (5:30)
Managing State & Using Hooks [Core Concept] (10:28)
Deriving & Outputting Data Based on State (4:50)
Quiz: State & Computed Values
Rendering Content Conditionally (8:03)
CSS Styling & Dynamic Styling (5:12)
Outputting List Data Dynamically (7:40)
Quiz: Conditional Content & Dynamic Lists
Module Summary (6:05)

React Essentials - Deep Dive

Module Introduction (1:26)
You Don't Have To Use JSX! (4:38)
Working with Fragments (5:40)
When Should You Split Components? (3:14)
Splitting Components By Feature & State (6:54)
Problem: Props Are Not Forwarded To Inner Elements (6:44)
Forwarding Props To Wrapped Elements (3:46)
Working with Multiple JSX Slots (8:42)
Setting Component Types Dynamically (8:44)
Setting Default Prop Values (2:09)
Onwards To The Next Project & Advanced Concepts (2:17)
Not All Content Must Go Into Components (5:10)
Closer Look: public/ vs assets/ for Image Storage
New Project: First Steps Towards Our Tic-Tac-Toe Game (3:58)
Concept Repetition: Splitting Components & Building Reusable Components (4:14)
Concept Repetition: Working with State (7:57)
Component Instances Work In Isolation! (2:03)
Conditional Content & A Suboptimal Way Of Updating State (4:54)
Best Practice: Updating State Based On Old State Correctly (7:04)
User Input & Two-Way-Binding (7:42)
Rendering Multi-Dimensional Lists (7:41)
Best Practice: Updating Object State Immutably (8:44)
Lifting State Up [Core Concept] (9:39)
Avoid Intersecting States! (5:22)
Prefer Computed Values & Avoid Unnecessary State Management (6:17)
Deriving State From Props (7:22)
Sharing State Across Components (4:12)
Reducing State Management & Identifying Unnecessary State (5:52)
Disabling Buttons Conditionally (2:37)
Outsourcing Data Into A Separate File (4:28)
Lifting Computed Values Up (5:19)
Deriving Computed Values From Other Computed Values (5:29)
Tic-Tac-Toe Game: The "Game Over" Screen & Checking for a Draw (5:40)
Why Immutability Matters - Always! (5:28)
When NOT To Lift State Up (5:20)
An Alternative To Lifting State Up (3:16)
Final Polishing & Improving Components (5:15)

React Essentials - Practice Project

Module Introduction & A Challenge For You! (5:09)
Adding a Header Component (4:48)
Getting Started with a User Input Component (5:07)
Handling Events & Using Two-Way-Binding (10:28)
Lifting State Up (8:59)
Computing Values & Properly Handling Number Values (5:41)
Outputting Results in a List & Deriving More Values (9:02)
Outputting Content Conditionally (4:24)

Styling React Components

Module Introduction & Starting Project (3:57)
Splitting CSS Code Across Multiple Files (3:22)
Styling React Apps with Vanilla CSS - Pros & Cons (2:32)
Vanilla CSS Styles Are NOT Scoped To Components! (3:31)
Styling React Apps with Inline Styles (6:24)
Dynamic & Conditional Inline Styles (3:27)
Dynamic & Conditional Styling with CSS Files & CSS Classes (5:41)
Scoping CSS Rules with CSS Modules (9:51)
Introducing "Styled Components" (Third-party Package) (8:03)
Creating Flexible Components with Styled Components (4:47)
Dynamic & Conditional Styling with Styled Components (11:07)
Styled Components: Pseudo Selectors, Nested Rules & Media Queries (7:15)
Creating Reusable Components & Component Combinations (9:53)
Introducing Tailwind CSS For React App Styling (11:26)
Adding & Using Tailwind CSS In A React Project (3:39)
Tailwind: Media Queries & Pseudo Selectors (5:22)
Dynamic & Conditional Styling with Tailwind (5:50)
Migrating The Demo App to Tailwind CSS (4:15)
Tailwind CSS: Pros & Cons (4:26)

Debugging React Apps

Module Introduction (1:26)
The Starting Project (1:17)
Understanding React Error Messages (8:31)
Using the Browser Debugger & Breakpoints (7:23)
Understanding React's "Strict Mode" (6:19)
Using the React DevTools (Browser Extension) (3:57)

Working with Refs & Portals

Module Introduction & Starting Project (3:19)
Repetition: Managing User Input with State (Two-Way-Binding) (5:17)
Introducing Refs: Connecting & Accessing HTML Elements via Refs (6:04)
Manipulating the DOM via Refs (2:14)
Refs vs State Values (4:45)
Adding Challenges to the Demo Project (4:49)
Setting Timers & Managing State (4:56)
Using Refs for More Than "DOM Element Connections" (8:30)
Adding a Modal Component (6:40)
Forwarding Refs to Custom Components (6:07)
Exposing Component APIs via the useImperativeHandle Hook (7:14)
More Examples: When To Use Refs & State (8:50)
Sharing State Across Components (4:58)
Enhancing the Demo App "Result Modal" (2:12)
Closing the Modal via the ESC (Escape) Key
Introducing & Understanding "Portals" (6:55)

Practice Project: Project Management App (with Components, State, Refs & More)

Module Introduction & Starting Project (3:11)
Adding a "Projects Sidebar" Component (2:29)
Styling the Sidebar & Button with Tailwind CSS (5:00)
Adding the "New Project" Component & A Reusable "Input" Component (5:58)
Styling Buttons & Inputs with Tailwind CSS (7:04)
Splitting Components to Split JSX & Tailwind Styles (for Higher Reusability) (6:49)
Managing State to Switch Between Components (8:19)
Collecting User Input with Refs & Forwarded Refs (13:22)
Handling Project Creation & Updating the UI (6:00)
Validating User Input & Showing an Error Modal via useImperativeHandle (10:55)
Styling the Modal via Tailwind CSS (5:46)
Making Projects Selectable & Viewing Project Details (15:22)
Handling Project Deletion (4:44)
Adding "Project Tasks" & A Tasks Component (5:51)
Managing Tasks & Understanding Prop Drilling (15:23)
Clearing Tasks & Fixing Minor Bugs (6:40)

React's Context API & useReducer - Advanced State Management

Module Introduction (1:54)
Understanding Prop Drilling & Project Overview (5:58)
Prop Drilling: Component Composition as a Solution (5:17)
Introducing the Context API (2:17)
Creating & Providing The Context (7:34)
Consuming the Context (5:49)
Linking the Context to State (7:27)
A Different Way Of Consuming Context (5:01)
What Happens When Context Values Change? (1:25)
Migrating the Entire Demo Project to use the Context API (6:20)
Outsourcing Context & State Into a Separate Provider Component (6:05)
Introducing the useReducer Hook (10:06)
Dispatching Actions & Editing State with useReducer (10:14)

Handling Side Effects & Using useEffect

Module Introduction & Starting Project (3:38)
What's a "Side Effect"? A Thorough Example (7:23)
A Potential Problem with Side Effects: An Infinite Loop (2:48)
Using useEffect for Handling (Some) Side Effects (5:31)
Not All Side Effects Need useEffect (7:58)
useEffect Not Needed: Another Example (8:30)
Preparing Another Use-Case For useEffect (4:10)
Using useEffect for Syncing With Browser APIs (4:09)
Understanding Effect Dependencies (3:00)
Fixing a Small Bug
Preparing Another Problem That Can Be Fixed with useEffect (4:54)
Introducing useEffect's Cleanup Function (4:49)
The Problem with Object & Function Dependencies (8:09)
The useCallback Hook (3:48)
useEffect's Cleanup Function: Another Example (7:31)
Optimizing State Updates (3:44)

Practice Project: Building a Quiz App

Module Introduction & Starting Project (2:21)
A First Component & Some State (7:03)
Deriving Values, Outputting Questions & Registering Answers (12:53)
Shuffling Answers & Adding Quiz Logic (6:57)
Adding Question Timers (11:40)
Working with Effect Dependencies & useCallback (7:14)
Using Effect Cleanup Functions & Using Keys for Resetting Components (7:53)
Highlighting Selected Answers & Managing More State (11:34)
Splitting Components Up To Solve Problems (17:43)
Moving Logic To Components That Actually Need It ("Moving State Down") (12:46)
Setting Different Timers Based On The Selected Answer (8:07)
Outputting Quiz Results (15:09)

A Look Behind The Scenes Of React & Optimization Techniques

Module Introduction (1:16)
React Builds A Component Tree / How React Works Behind The Scenes (8:41)
Analyzing Component Function Executions via React's DevTools Profiler (5:57)
Avoiding Component Function Executions with memo() (8:04)
Avoiding Component Function Executions with Clever Structuring (6:06)
Understanding the useCallback() Hook (7:05)
Understanding the useMemo() Hook (5:58)
React Uses A Virtual DOM - Time To Explore It! (7:15)
Why Keys Matter When Managing State! (11:56)
More Reasons For Why Keys Matter (2:54)
Using Keys For Resetting Components (5:22)
State Scheduling & Batching (5:49)
Optimizing React with MillionJS (4:45)

An Alternative Way Of Building Components: Class-based Components

Module Introduction (2:10)
What & Why (4:53)
Adding a First Class-based Component (6:54)
Working with State & Events (11:38)
The Component Lifecycle (Class-based Components Only!) (5:20)
Lifecycle Methods In Action (11:46)
Class-based Components & Context (4:53)
Class-based vs Functional Components: A Summary (2:42)
Introducing Error Boundaries (9:52)
Module Resources

Sending Http Requests (e.g. Connecting to a Database)

Module Introduction (2:53)
How (Not) To Connect To A Database (6:20)
Starting Project & Dummy Backend API (3:25)
Preparing the App For Data Fetching (5:07)
How NOT To Send HTTP Requests (And Why It's Wrong) (6:24)
Sending HTTP Requests (GET Request) via useEffect (3:59)
Using async / await (2:26)
Handling Loading States (5:27)
Handling HTTP Errors (9:16)
Transforming Fetched Data (5:31)
Extracting Code & Improving Code Structure (2:53)
Sending Data with POST Requests (12:00)
Using Optimistic Updating (7:33)
Deleting Data (via DELETE HTTP Requests) (3:43)
Practice: Fetching Data (7:13)

Building Custom React Hooks

Module Introduction & Starting Project (2:07)
Revisiting the "Rules of Hooks" & Why To Use Hooks (6:11)
Creating a Custom Hook (5:32)
Custom Hook: Managing State & Returning State Values (10:51)
Exposing Nested Functions From The Custom Hook (6:03)
Using A Custom Hook in Multiple Components (4:25)
Creating Flexible Custom Hooks (4:59)

Working with Forms & User Input

Module Introduction & Starting Project (2:04)
What Are Forms & What's Tricky About Them? (3:59)
Handling Form Submission (10:26)
Managing & Getting User Input via State & Generic Handlers (11:12)
Getting User Input via Refs (4:35)
Getting Values via FormData & Native Browser APIs (9:03)
Resetting Forms (4:38)
Validating Input on Every Keystroke via State (6:58)
Validating Input Upon Lost Focus (Blur) (7:53)
Validating Input Upon Form Submission (7:54)
Validating Input via Built-in Validation Props (4:59)
Mixing Custom & Built-in Validation Logic (4:28)
Building & Using a Reusable Input Component (10:06)
Outsourcing Validation Logic (3:22)
Creating a Custom useInput Hook (15:11)
Using Third-Party Form Libraries (1:31)

Practice Project: Building a Food Order App

Module Introduction & Starting Project (4:14)
Planning the App & Adding a First Component (6:40)
Fetching Meals Data (GET HTTP Request) (12:00)
Adding a "MealItem" Component (7:39)
Formatting & Outputting Numbers as Currency (2:51)
Creating a Configurable & Flexible Custom Button Component (8:02)
Getting Started with Cart Context & Reducer (20:09)
Finishing & Using the Cart Context & Reducer (17:21)
Adding a Reusable Modal Component with useEffect (7:26)
Opening the Cart in the Modal via a New Context (19:32)
Working on the Cart Items (8:01)
Adding a Custom Input Component & Managing Modal Visibility (19:31)
Handling Form Submission & Validation (6:03)
Sending a POST Request with Order Data (7:35)
Adding a Custom HTTP Hook & Avoiding Common Errors (26:23)
Handling HTTP Loading & Error States (3:12)
Finishing Touches (14:08)

Diving into Redux (An Alternative To The Context API)

Module Introduction (1:05)
Another Look At State In React Apps (5:14)
Redux vs React Context (6:19)
How Redux Works (5:48)
Important: createStore() is (Not) Deprecated
Exploring The Core Redux Concepts (15:14)
More Redux Basics (3:04)
Preparing a new Project (1:59)
Creating a Redux Store for React (4:54)
Providing the Store (3:13)
Using Redux Data in React Components (5:08)
Dispatching Actions From Inside Components (3:33)
Redux with Class-based Components (10:20)
Attaching Payloads to Actions (4:15)
Working with Multiple State Properties (6:19)
How To Work With Redux State Correctly (5:07)
Redux Challenges & Introducing Redux Toolkit (5:27)
Adding State Slices (8:11)
Connecting Redux Toolkit State (4:47)
Migrating Everything To Redux Toolkit (6:19)
Working with Multiple Slices (11:50)
Reading & Dispatching From A New Slice (6:56)
Splitting Our Code (5:03)
Summary (3:53)
Module Resources

Advanced Redux

Module Introduction (0:39)
Redux & Side Effects (and Asynchronous Code) (3:27)
Refresher / Practice: Part 1/2 (20:12)
Refresher / Practice: Part 2/2 (18:00)
Redux & Async Code (4:09)
Frontend Code vs Backend Code (5:40)
Where To Put Our Logic (8:59)
Using useEffect with Redux (6:00)
A Problem with useEffect()
Handling Http States & Feedback with Redux (12:49)
Using an Action Creator Thunk (12:07)
Getting Started with Fetching Data (8:39)
Finalizing the Fetching Logic (5:16)
Exploring the Redux DevTools (5:37)
Summary (1:53)
Module Resources

Building a Multi-Page SPA with React Router

Module Introduction (3:21)
Routing: Multiple Pages in Single-Page Applications (3:15)
Project Setup & Installing React Router (3:06)
Defining Routes (7:42)
Adding a Second Route (2:07)
Exploring an Alternative Way of Defining Routes (3:01)
Navigating between Pages with Links (4:36)
Layouts & Nested Routes (8:24)
Showing Error Pages with errorElement (3:58)
Working with Navigation Links (NavLink) (6:37)
Navigating Programmatically (2:41)
Defining & Using Dynamic Routes (7:44)
Adding Links for Dynamic Routes (3:22)
Understanding Relative & Absolute Paths (10:38)
Working with Index Routes (1:56)
Onwards to a new Project Setup (3:16)
Time to Practice: Problem (1:25)
Time to Practice: Solution (23:16)
Data Fetching with a loader() (7:35)
Using Data From A Loader In The Route Component (2:51)
More loader() Data Usage (3:17)
Where Should loader() Code Be Stored? (2:18)
When Are loader() Functions Executed? (2:48)
Reflecting The Current Navigation State in the UI (2:53)
Returning Responses in loader()s (4:01)
Which Kind Of Code Goes Into loader()s? (1:14)
Error Handling with Custom Errors (4:56)
Extracting Error Data & Throwing Responses (6:24)
The json() Utility Function (2:07)
Dynamic Routes & loader()s (7:32)
The useRouteLoaderData() Hook & Accessing Data From Other Routes (7:41)
Planning Data Submission (2:22)
Working with action() Functions (9:08)
Submitting Data Programmatically (9:06)
Updating the UI State Based on the Submission Status (4:02)
Validating User Input & Outputting Validation Errors (6:57)
Reusing Actions via Request Methods (7:55)
Behind-the-Scenes Work with useFetcher() (9:11)
Deferring Data Fetching with defer() (9:07)
Controlling Which Data Should Be Deferred (7:22)
Module Summary (2:57)

Adding Authentication To React Apps

Module Introduction (1:10)
How Authentication Works (9:08)
Project Setup & Route Setup (3:46)
Working with Query Parameters (7:35)
Implementing the Auth Action (11:40)
Validating User Input & Outputting Validation Errors (4:18)
Adding User Login (1:55)
Attaching Auth Tokens to Outgoing Requests (6:32)
Adding User Logout (4:21)
Updating the UI Based on Auth Status (6:05)
Adding Route Protection (2:46)
Adding Automatic Logout (5:10)
Managing the Token Expiratoin (7:28)

Deploying React Apps

Module Introduction (1:40)
Deployment Steps (3:35)
Understanding Lazy Loading (4:47)
Adding Lazy Loading (9:11)
Building the Code For Production (2:22)
Deployment Example (6:44)
Server-side Routing & Required Configuration (4:07)

React Query / Tanstack Query: Handling HTTP Requests With Ease

Module Introduction (1:46)
Project Setup & Overview (4:08)
React Query: What & Why? (5:59)
Installing & Using Tanstack Query - And Seeing Why It's Great! (16:32)
Understanding & Configuring Query Behaviors - Cache & Stale Data (7:43)
Dynamic Query Functions & Query Keys (13:05)
The Query Configuration Object & Aborting Requests (5:27)
Enabled & Disabled Queries (6:55)
Changing Data with Mutations (11:29)
Fetching More Data & Testing the Mutation (6:39)
Acting on Mutation Success & Invalidating Queries (8:50)
A Challenge! The Problem (2:14)
A Challenge! The Solution (16:37)
Disabling Automatic Refetching After Invalidations (2:42)
Enhancing the Demo App & Repeating Mutation Concepts (9:18)
React Query Advantages In Action (8:57)
Updating Data with Mutations (4:49)
Optimistic Updating (13:06)
Using the Query Key As Query Function Input (7:47)
React Query & React Router (20:26)

A (Pretty Deep Dive) Introduction to NextJS - App Router

Module Introduction (2:01)
Creating a NextJS Project (4:17)
Understanding File-based Routing & React Server Components (2:45)
Adding Another Route via the Filesystem (3:06)
Navigating Between Pages (4:12)
Working with Pages & Layouts (3:22)
Reserved File Names, Custom Components & How To Organize A NextJS Project (6:31)
Reserved Filenames
Configuring Dynamic Routes & Using Route Parameters (6:17)
Onwards to the Main Project: The Foodies App (1:24)
Exercise: Your Task (2:03)
Exercise: Solution (8:19)
Revisiting The Concept Of Layouts (3:50)
Adding a Custom Component To A Layout (5:58)
Styling NextJS Project: Your Options & Using CSS Modules (6:00)
Optimizing Images with the NextJS Image Component (4:57)
Using More Custom Components (3:48)
Populating The Starting Page Content (4:18)
Preparing an Image Slideshow (3:25)
React Server Components vs Client Components - When To Use What (8:15)
Using Client Components Efficiently (11:07)
Outputting Meals Data & Images With Unknown Dimensions (10:31)
Setting Up A SQLite Database (3:11)
Fetching Data By Leveraging NextJS & Fullstack Capabilities (7:17)
Adding A Loading Page (4:00)
Using Suspense & Streamed Responses For Granular Loading State Management (5:54)
Handling Errors (5:22)
Handling "Not Found" States (1:57)
Loading & Rendering Meal Details via Dynamic Routes & Route Parameters (11:04)
Throwing Not Found Errors For Individual Meals (2:03)
Getting Started with the "Share Meal" Form (1:53)
Getting Started with a Custom Image Picker Input Component (8:28)
Adding an Image Preview to the Picker (6:00)
Improving the Image Picker Component
Introducing & Using Server Actions for Handling Form Submissions (9:02)
Storing Server Actions in Separate Files (3:45)
Creating a Slug & Sanitizing User Input for XSS Protection (3:20)
Storing Uploaded Images & Storing Data in the Database (12:56)
Managing the Form Submission Status with useFormStatus (5:30)
Adding Server-Side Input Validation (5:54)
Working with Server Action Responses & useFormState (8:05)
Building For Production & Understanding NextJS Caching (6:06)
Triggering Cache Revalidations (3:57)
Don't Store Files Locally On The Filesystem! (2:13)
Bonus: Storing Uploaded Images In The Cloud (AWS S3)
Adding Static Metadata (3:47)
Adding Dynamic Metadata (2:20)
Module Summary (4:25)

A (Pretty Deep Dive) Introduction to Next.js - Pages Router

About the NextJS Pages Router (2:55)
Creating a NextJS Project (2:07)
Analyzing the Created Project (2:52)
Adding First Pages (6:05)
Adding Nested Paths & Pages (Nested Routes) (3:47)
Creating Dynamic Pages (with Parameters) (3:36)
Extracting Dynamic Parameter Values (4:07)
Linking Between Pages (7:13)
Onwards to a bigger Project! (3:32)
Preparing the Project Pages (3:42)
Outputting a List of Meetups (5:03)
Adding the New Meetup Form (3:54)
The "_app.js" File & Layout Wrapper (6:17)
Using Programmatic (Imperative) Navigation (3:47)
Adding Custom Components & CSS Modules (10:00)
How Pre-rendering Works & Which Problem We Face (5:52)
Data Fetching for Static Pages (8:56)
More on Static Site Generation (SSG) (5:44)
Exploring Server-side Rendering (SSR) with "getServerSideProps" (6:27)
Working with Params for SSG Data Fetching (5:14)
Preparing Paths with "getStaticPaths" & Working With Fallback Pages (7:16)
Introducing API Routes (6:20)
Working with MongoDB (9:32)
Sending Http Requests To Our API Routes (6:49)
Getting Data From The Database (7:09)
Getting Meetup Details Data & Preparing Pages (9:41)
Adding "head" Metadata (9:19)
Deploying Next.js Projects (12:26)
Using Fallback Pages & Re-deploying (4:13)
Summary (2:15)
Module Resources

Animating React Apps with Framer Motion

Module Introduction (3:05)
Project Setup & Overview (1:42)
Animating with CSS Transitions (7:41)
Animating with CSS Animations (5:38)
Introducing Framer Motion (3:48)
Framer Motion Basics & Fundamentals (8:29)
Animating Between Conditional Values (4:13)
Adding Entry Animations (4:28)
Animating Element Disappearances / Removal (3:51)
Making Elements "Pop" With Hover Animations (4:13)
Reusing Animation States (3:28)
Nested Animations & Variants (7:46)
Animating Staggered Lists (4:29)
Animating Colors & Working with Keyframes (4:04)
Imperative Animations (7:28)
Animating Layout Changes (3:34)
Orchestrating Multi-Element Animations (10:05)
Combining Animations With Layout Animations (3:55)
Animating Shared Elements (4:15)
Re-triggering Animations via Keys (4:52)
Scroll-based Animations (15:44)

React Patterns & Best Practices

Module Introduction (0:55)
Project Overview (0:50)
Introducing Compound Components (11:04)
Managing Multi-Component State with the Context API (10:57)
Grouping Compound Components (6:29)
Adding Extra Components For Reusability & Configurability (8:36)
Sharing Cross-Component State When Working With Compound Components (6:07)
Introducing & Using Render Props (6:14)
Adding Search To A React App (4:18)
Implementing a Search Functionality With Help Of Render Props (4:18)
Handling Keys Dynamically (2:42)
Working with Debouncing (7:10)

Testing React Apps (Unit Tests)

Module Introduction (1:23)
What & Why? (3:24)
Understanding Different Kinds Of Tests (4:04)
What To Test & How To Test (1:29)
Understanding the Technical Setup & Involved Tools (2:39)
Running a First Test (7:16)
Writing Our First Test (10:14)
Grouping Tests Together With Test Suites (2:14)
Testing User Interaction & State (14:00)
Testing Connected Components (3:19)
Testing Asynchronous Code (9:11)
Working With Mocks (8:30)
Summary & Further Resources (3:47)
Module Resources

React & TypeScript

Module Introduction (1:26)
What & Why? (6:34)
Installing & Using TypeScript (6:38)
Exploring the Base Types (3:55)
Working with Array & Object Types (5:33)
Understanding Type Inference (2:47)
Using Union Types (2:48)
Understanding Type Aliases (2:42)
Functions & Function Types (5:19)
Diving Into Generics (8:01)
A Closer Look At Generics
Creating a React + TypeScript Project (8:34)
Working with Components & TypeScript (5:41)
Working with Props & TypeScript (14:20)
Adding a Data Model (9:09)
Time to Practice: Exercise Time! (7:02)
Form Submissions In TypeScript Projects (5:21)
Working with refs & useRef (10:56)
Working with "Function Props" (7:26)
Managing State & TypeScript (5:13)
Adding Styling (2:19)
Time to Practice: Removing a Todo (9:27)
The Context API & TypeScript (13:55)
Summary (2:18)
Bonus: Exploring tsconfig.json (5:46)
Module Resources

Optional: React Hooks Introduction & Summary

Module Introduction (2:10)
What Are React Hooks? (4:56)
The Starting Project (4:51)
Getting Started with useState() (9:20)
More on useState() & State Updating (11:54)
Array Destructuring (2:34)
Multiple States (3:47)
Rules of Hooks (2:20)
Passing State Data Across Components (7:56)
Time to Practice: Hooks Basics - Problem (1:03)
Time to Practice: Hooks Basics - Solution (2:55)
Sending Http Requests (7:16)
useEffect() & Loading Data (8:06)
Understanding useEffect() Dependencies (2:21)
More on useEffect() (9:37)
What's useCallback()? (5:28)
Working with Refs & useRef() (5:21)
Cleaning Up with useEffect() (3:20)
Deleting Ingredients (2:28)
Loading Errors & State Batching (8:48)
More on State Batching & State Updates
Understanding useReducer() (9:43)
Using useReducer() for the Http State (10:40)
Working with useContext() (8:27)
Performance Optimizations with useMemo() (10:30)
Getting Started with Custom Hooks (13:45)
Sharing Data Between Custom Hooks & Components (14:58)
Using the Custom Hook (8:11)
Wrap Up (3:05)
Module Resources

Optional: React Summary & Core Feature Walkthrough

Module Introduction (1:08)
What Is React & Why Would You Use It? (5:37)
React Projects - Requirements (2:09)
Creating React Projects (3:27)
Our Starting Project (3:28)
Understanding How React Works (7:46)
Building A First Custom Component (11:15)
Outputting Dynamic Values (5:03)
Reusing Components (6:00)
Passing Data to Components with Props (6:15)
CSS Styling & CSS Modules (10:07)
Exercise & Another Component (6:31)
Preparing the App For State Management (3:46)
Adding Event Listeners (7:52)
Working with State (10:00)
Lifting State Up (9:08)
The Special "children" Prop (7:21)
State & Conditional Content (8:59)
Adding a Shared Header & More State Management (7:51)
Adding Form Buttons (3:34)
Handling Form Submission (6:18)
Updating State Based On Previous State (5:30)
Outputting List Data (6:39)
Adding a Backend to the React SPA (6:10)
Sending a POST HTTP Request (4:12)
Handling Side Effects with useEffect() (9:06)
Handle Loading State (4:23)
Understanding & Adding Routing (3:55)
Adding Routes (5:36)
Working with Layout Routes (4:08)
Refactoring Route Components & More Nesting (5:35)
Linking & Navigating (8:09)
Data Fetching via loader()s (9:07)
Submitting Data with action()s (11:08)
Dynamic Routes (8:41)
Module Summary (1:25)

Course Roundup

Roundup (1:10)

The useCallback Hook

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