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## Table of Contents

- [An introduction to React](#an-introduction-to-react)
  - [Before getting into React...](#before-getting-into-react)
    - [Manipulating the DOM](#manipulating-the-dom)
    - [The inspiration for React](#the-inspiration-for-react)
    - [The shadow DOM](#the-shadow-dom)
  - [Learning React](#learning-react)
  - [Self-assessment](#self-assessment)

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# An introduction to React

## Before getting into React...

### Manipulating the DOM

- https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Client-side_web_APIs/Manipulating_documents
- https://developer.mozilla.org/en-US/docs/Web/API/Document_Object_Model/Introduction

### The inspiration for React

### The shadow DOM

## Learning React

Follow the tutorial: https://reactjs.org/docs/hello-world.html

## Self-assessment

Basics:

- What is the difference between elements and components?
- What is JSX?
- Is it ok to modify props?
- How should you modify state?
- What does "the data flows down" mean?
- How do you pass arguments to event handlers?
- How do you put conditionals in JSX?
- How do you put inline if-else in JSX?
- How do you prevent a component from rendering?
- What is the `key` prop?
- What are controlled and uncontrolled components?
- What does it mean to "lift state up"?
- Should you use composition or inheritance with React?

Advanced: