# Week 1

This session is about the fundamentals of using React to build web applications.

## Contents

* [Preparation](/course-content/frontend/react/week1/preparation.md)
* [Session Plan](/course-content/frontend/react/week1/session-plan.md) (for mentors)
* [Assignment](/course-content/frontend/react/week1/assignment.md)

## Session Learning Goals

By the end of this session, you will:

### React

* [ ] Understand when to use React over vanilla JavaScript
* [ ] Be able to grasp the component paradigm and re-usability of React components
* [ ] Learn about advantages of using React in large teams, for design systems and (public) modules

### JSX

* [ ] Understand how to return JSX
* [ ] Know about the single-root-element requirement
* [ ] Be able to use Fragments in an appropriate way
* [ ] Embed JavaScript expressions into JSX
* [ ] Use conditional rendering

### Components & CSS imports

* [ ] Confidently describe what components are
* [ ] Break down a UI into re-usable components
* [ ] Be able to create functional components
* [ ] Render components inside components
* [ ] Put components into a hierarchy and composition of UIs
* [ ] Pass HTML attributes and `className`
* [ ] Import `.css` files into components


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