Kursinnhold

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: Implement a Car List Filter with useMemo

Task

Create the CarList component responsible for rendering a list of cars and providing a search functionality to filter them based on their names. It allows users to enter a search term and dynamically filters the list of cars based on that input.

Instructions

Import the necessary hooks from the React library.
Inside the CarList component, declare a state variable searchInput and a state updater function setSearchInput using the useState hook. Initialize searchInput with an empty string.
Use the useMemo hook to memoize the filteredCars array. The memoization logic should filter the cars based on the searchInput. If searchInput is empty, return all cars; otherwise, filter the cars based on the search input.
In the useMemo dependency array, specify the correct variables the memoized function depends on.

Include an import statement to import the necessary hook from the React library.
Use the useState hook to declare a state variable and its updater function.
The useMemo hook memoizes the filtered cars array, preventing unnecessary recalculations.
In the dependency array of useMemo, include the variables that the memoized function depends on (cars and searchInput).

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Seksjon 3. Kapittel 9

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