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)

3. Components & Props

Activity 3.1: Creating an App to Output Your Goals for This Book

This activity builds upon Activity 2.2 from the previous chapter. If you followed along there, you can use your existing code and enhance it by adding props.

The aim here is to build reusable GoalItem components that can be configured via props. Every GoalItem component should receive and output a goal title and a short description text with extra information about the goal.

Perform the following steps to complete this activity:

  1. Finish Activity 2.2 from the previous chapter.
  2. Add a new component to the src/components folder, a component function named GoalItem, in a new GoalItem.js file.
  3. Copy the component function (including the returned JSX code) from FirstGoal.js and add a new props parameter to the function. Remove the title and description text from the JSX code:
    function GoalItem(props) {
      return (