Kursusindhold
React Mastery
React Mastery
1. Fundamentals of React and Component-Based UI
What Is React and Why Use It?Comparing SPAs and MPAs in Web DevelopmentHow React Works with the Virtual DOMIntroducing JSX for Writing HTML in JavaScriptBuilding Complex UI with JSX Rendering Elements in ReactChallenge: Render an Element in ReactUnderstanding React ComponentsPassing Data with Props in ReactChallenge: Create Functional ComponentsConditional Rendering in ReactChallenge: Implement Conditional Rendering – Chat NotificationChallenge: Implement Conditional Rendering – Bank AlertRendering Collections of Data in ReactChallenge: Display Data Collections in ReactReact Fundamentals Wrap-Up
2. Styling Techniques in React Applications
Introduction to Styling in ReactUsing Inline Styles in ReactApplying Inline Styles in PracticeChallenge: Use Inline Styles in a React ComponentStyling React Components with External CSSApplying External CSS in PracticeChallenge: Apply External CSS to a React AppUsing CSS Modules for Scoped Styling in React Organizing File and Folder Structures for StylesChallenge: Use CSS Modules in React Styling Techniques in React Wrap-Up
3. React Hooks and Context for State Management
Introduction to React Hooks and ContextManaging State with the useState HookChallenge: Toggle Visibility with useStateWorking with References Using the useRef HookChallenge: Build a Controlled Form ComponentHandling Side Effects with the useEffect HookChallenge: Fetch and Display Data with useEffectOptimizing Performance with the useMemo HookChallenge: Implement a Car List Filter with useMemoSharing State Across Components with ContextUsing Context in a Real-World ScenarioChallenge: Build a World of Astronomy App with ContextReact Hooks and Context Wrap-Up
Building Complex UI with JSX
In the previous chapter, we explored the basics of JSX. Now, let's dive deeper and learn how to create more complex JSX elements.
The Rule of a Single Parent Element
One important rule when working with nested JSX is that it must return a single parent element. This parent element wraps all the other levels of nested elements. This rule ensures that React can properly render and manage the structure of your JSX. Here's a practical example to illustrate this rule:
Valid JSX:
jsx
Invalid JSX (Won't Transpile):
jsx
Note
When rendering multiple elements like this, we can wrap them all in parentheses
()for clarity, but it's not strictly required. Also, remember that this concept applies when we return JSX elements in React components.
Example
jsx
Var alt klart?
Tak for dine kommentarer!
Sektion 1. Kapitel 5
