Kursinnehåll

React Mastery

1. Fundamentals of React and Component-Based UI

What Is React and Why Use It?Comparing SPAs and MPAs in Web Development How React Works with the Virtual DOM Introducing JSX for Writing HTML in JavaScript Building Complex UI with JSX Rendering Elements in React Challenge: Render an Element in React Understanding React Components Passing Data with Props in React Challenge: Create Functional Components Conditional Rendering in React Challenge: Implement Conditional Rendering – Chat Notification Challenge: Implement Conditional Rendering – Bank Alert Rendering Collections of Data in React Challenge: Display Data Collections in React React Fundamentals Wrap-Up

2. Styling Techniques in React Applications

Introduction to Styling in React Using Inline Styles in React Applying Inline Styles in Practice Challenge: Use Inline Styles in a React Component Styling React Components with External CSS Applying External CSS in Practice Challenge: Apply External CSS to a React App Using CSS Modules for Scoped Styling in React Organizing File and Folder Structures for Styles Challenge: Use CSS Modules in React Styling Techniques in React Wrap-Up

3. React Hooks and Context for State Management

Introduction to React Hooks and Context Managing State with the useState Hook Challenge: Toggle Visibility with useState Working with References Using the useRef Hook Challenge: Build a Controlled Form Component Handling Side Effects with the useEffect Hook Challenge: Fetch and Display Data with useEffect Optimizing Performance with the useMemo Hook Challenge: Implement a Car List Filter with useMemo Sharing State Across Components with Context Using Context in a Real-World Scenario Challenge: Build a World of Astronomy App with Context React Hooks and Context Wrap-Up

4. Structuring Real-World React Projects

Setting Up Your React Development Environment Choosing a Code Editor for React Development Organizing the Project Folder Structure Working with the Terminal in React Development Starting and Running a React Project with Vite React Project Setup Wrap-Up

Challenge: Toggle Visibility with useState

Task

Create a component that includes a button and a text paragraph. Implement the necessary logic using the useState hook to toggle the visibility of the text paragraph when the button is clicked.

Instructions

Import the useState hook from the React library.
Declare a state variable named isVisible using the useState hook. Initialize it with the value false.
Implement a function named toggleVisibility that, when called, toggles the isVisible state between true and false.
Use the toggleVisibility function as the onClick handler for the button.

Include an import statement to import the appropriate hook from the React library.
For this task, we will utilize the useState hook as we are managing the state of paragraph visibility.
To determine the appropriate variable name for the state, observe the function associated with setting the state, which is setIsVisible. Remove the "set" prefix and use a lowercase first letter for the variable name, which should be isVisible.
To invoke the toggleVisibility function when the button is clicked, assign it as the value for the onClick attribute of the button.

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Avsnitt 3. Kapitel 3

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