> For the complete documentation index, see [llms.txt](https://program.hackyourfuture.dk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://program.hackyourfuture.dk/course-content/frontend/react/week3.md).

# Week 3

This session is about understanding and utilizing Hooks in React components, especially `useEffect`.

## Contents

* [Preparation](/course-content/frontend/react/week3/preparation.md)
* [Session Plan](/course-content/frontend/react/week3/session-plan.md) (for mentors)
* [Assignment](/course-content/frontend/react/week3/assignment.md)

## Session Learning Goals

By the end of this session, you will:

### Forms / Event Handling

* [ ] Know how to build interactive forms as React components
* [ ] Be familiar with React's way to attach (DOM) events to elements
* [ ] Be able to submit a form and process the form data in JavaScript

### Hooks

* [ ] Understand how and why React uses Hooks
* [ ] Have tried the `useEffect` hook in different contexts
* [ ] Know how to use `useEffect` to synchronize with other systems (like the DOM or browser window)

### Loading Data

* [ ] Be able to load data from an API utilizing `fetch`, and the `useEffect` and `useState` hooks
* [ ] Understand at what time(s) your data will be loaded from the API


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