Introduction

Setup

A Basic React App

The React Source Code

SECTION: The DOM and Declarative Programming

HTML and Trees

HTML, The Browser, and the DOM

DOM Manipulation

Conceptual Aside: Imperative vs Declarative Programming

The DOM and Imperative Programming

The DOM and Declarative Programming

SECTION: React Elements

Conceptual Aside: Recursion

Conceptual Aside: POJOs

Creating React Elements

React Element Trees

Conceptual Aside: DOM Element References

React Elements and DOM Elements

React DOM Updates

Components

Components and Reusability

Conceptual Aside: Pure Functions

Props

Template Logic

Element Properties

SECTION: JSX

Conceptual Aside: Markup and Tree Creation Shorthand

Conceptual Aside: Transformation

React Elements and JSX

JSX and Thinking In Elements

Conceptual Aside: HTML Authoring

Fragment and HTML authoring

SECTION: Fiber and Reconciliation

Root Creation and render

Conceptual Aside: Trees and Linked Lists

Fiber, Fiber Nodes, and Fiber Trees

Conceptual Aside: Tree Reconciliation and the Tree Edit Distance Problem

Work-In-Progress Nodes

Reconciliation and Work

SECTION: Execution Contexts

Conceptual Aside: Execution Contexts and the Event Loop

Fiber and Custom Execution Contexts

Units of Work and The Work Loop

Conceptual Aside: Equality

Beginning, Completing, Bailing Out and Pausing Work

Lanes and Priority

SECTION: React DOM and Rendering

Committing Work and The Renderer

Mounting, Updating, and Unmounting

SECTION: Events

DOM Events

React Event Objects

Synthetic Event Properties and Methods

SECTION: State

Conceptual Aside: State Machines

Conceptual Aside: Pure Functions (again)

UI: A Function of State

Conceptual Aside: Reducers

Actions and State

SECTION: Hooks and State

Fibers, Hooks, and State

Conceptual Aside: Queues

Update Queues

State and Re-renders

useReducer (Part 1)

useReducer (Part 2)

useState (Part 1)

useState (Part 2)

Rules of Hooks

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0:00 Introduction
2:52 Setup
4:43 A Basic React App
6:50 The React Source Code
8:56 SECTION: The DOM and Declarative Programming
9:17 HTML and Trees
11:17 HTML, The Browser, and the DOM
15:20 DOM Manipulation
21:53 Conceptual Aside: Imperative vs Declarative Programming
24:53 The DOM and Imperative Programming
28:05 The DOM and Declarative Programming
32:13 SECTION: React Elements
32:39 Conceptual Aside: Recursion
36:56 Conceptual Aside: POJOs
49:49 Creating React Elements
1:01:25 React Element Trees
1:06:50 Conceptual Aside: DOM Element References
1:08:22 React Elements and DOM Elements
1:14:23 React DOM Updates
1:26:37 Components
1:32:39 Components and Reusability
1:43:45 Conceptual Aside: Pure Functions
1:49:04 Props
2:01:28 Template Logic
2:15:40 Element Properties
2:22:58 SECTION: JSX
2:23:19 Conceptual Aside: Markup and Tree Creation Shorthand
2:25:13 Conceptual Aside: Transformation
2:27:02 React Elements and JSX
2:46:44 JSX and Thinking In Elements
2:58:43 Conceptual Aside: HTML Authoring
3:01:32  Fragment and HTML authoring
3:11:36 SECTION: Fiber and Reconciliation
3:12:18 Root Creation and render
3:21:15 Conceptual Aside: Trees and Linked Lists
3:25:36 Fiber, Fiber Nodes, and Fiber Trees
3:32:33 Conceptual Aside: Tree Reconciliation and the Tree Edit Distance Problem
3:36:18 Work-In-Progress Nodes
3:45:49 Reconciliation and Work
3:51:35 SECTION: Execution Contexts
3:51:56 Conceptual Aside: Execution Contexts and the Event Loop
3:55:39 Fiber and Custom Execution Contexts
3:59:54 Units of Work and The Work Loop
4:02:53 Conceptual Aside: Equality
4:06:27 Beginning, Completing, Bailing Out and Pausing Work
4:13:28 Lanes and Priority
4:16:04 SECTION: React DOM and Rendering
4:16:19 Committing Work and The Renderer
4:19:13 Mounting, Updating, and Unmounting
4:24:02 SECTION: Events
4:24:26 DOM Events
4:36:03 React Event Objects
4:43:54 Synthetic Event Properties and Methods
4:49:38 SECTION: State
4:49:55 Conceptual Aside: State Machines
4:56:32 Conceptual Aside: Pure Functions (again)
4:59:13 UI: A Function of State
5:01:59 Conceptual Aside: Reducers
5:08:31 Actions and State
5:17:26 SECTION: Hooks and State
5:17:51 Fibers, Hooks, and State
5:21:57 Conceptual Aside: Queues
5:25:50 Update Queues
5:28:37 State and Re-renders
5:31:15 useReducer (Part 1)
5:39:02 useReducer (Part 2)
5:45:08 useState (Part 1)
5:49:24 useState (Part 2)
6:00:10 Rules of Hooks
6:07:55 Enroll in the Full Course

Understanding React: The First 6 Hours

Understanding React: The First 6 Hours

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