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React Key Concepts

You're reading from   React Key Concepts Consolidate your knowledge of React's core features

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Product type Paperback
Published in Dec 2022
Publisher Packt
ISBN-13 9781803234502
Length 590 pages
Edition 1st Edition
Tools
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Author (1):
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Maximilian Schwarzmüller Maximilian Schwarzmüller
Author Profile Icon Maximilian Schwarzmüller
Maximilian Schwarzmüller
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Table of Contents (16) Chapters Close

Preface
1. React – What and Why FREE CHAPTER 2. Understanding React Components and JSX 3. Components and Props 4. Working with Events and State 5. Rendering Lists and Conditional Content 6. Styling React Apps 7. Portals and Refs 8. Handling Side Effects 9. Behind the Scenes of React and Optimization Opportunities 10. Working with Complex State 11. Building Custom React Hooks 12. Multipage Apps with React Router 13. Managing Data with React Router 14. Next Steps and Further Resources Appendix

7. Portals & Refs

Activity 7.1: Extract User Input Values

In this activity, you have to add logic to an existing React component to extract values from a form. The form contains an input field and a drop-down menu and you should make sure that, upon form submission, both values are read and, for the purpose of this dummy app, output to the browser console.

Use your knowledge about refs and uncontrolled components to implement a solution without using React state.

Note

You can find the starting code for this activity at https://packt.link/PAvKn. When downloading this code, you'll always download the entire repository. Make sure to then navigate to the subfolder with the starting code (activities/practice-1/starting-code in this case) to use the right code snapshot.

After downloading the code and running npm install in the project folder (to install all the required dependencies), the solution steps are as follows:

  1. Inside the Form component, create two...
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