Book Image

React Key Concepts

By : Maximilian Schwarzmüller
Book Image

React Key Concepts

By: Maximilian Schwarzmüller

Overview of this book

As the most popular JavaScript library for building modern, interactive user interfaces, React is an in-demand framework that’ll bring real value to your career or next project. But like any technology, learning React can be tricky, and finding the right teacher can make things a whole lot easier. Maximilian Schwarzmüller is a bestselling instructor who has helped over two million students worldwide learn how to code, and his latest React video course (React — The Complete Guide) has over six hundred thousand students on Udemy. Max has written this quick-start reference to help you get to grips with the world of React programming. Simple explanations, relevant examples, and a clear, concise approach make this fast-paced guide the ideal resource for busy developers. This book distills the core concepts of React and draws together its key features with neat summaries, thus perfectly complementing other in-depth teaching resources. So, whether you've just finished Max’s React video course and are looking for a handy reference tool, or you've been using a variety of other learning materials and now need a single study guide to bring everything together, this is the ideal companion to support you through your next React projects. Plus, it's fully up to date for React 18, so you can be sure you’re ready to go with the latest version.
Table of Contents (16 chapters)

6. Styling React Apps

Activity 6.1: Providing Input Validity Feedback upon Form Submission

In this activity, you will build a basic form that allows users to enter an email address and a password. The provided input of each input field is validated, and the validation result is stored (for each individual input field).

The aim of this activity is to add some general form styling and some conditional styling that becomes active once an invalid form has been submitted. The exact styles are up to you, but for highlighting invalid input fields, the background color of the affected input field must be changed, as well as its border color and the text color of the related label.

Perform the following steps to complete this activity:

  1. Create a new React project and add a Form component function in a components/Form.js file in the project.
  2. Export the component and import it into App.js.
  3. Output the <Form /> component as part of App's JSX code.
  4. In the...