React is a JavaScript library for building user interfaces. At its core, React relies on components and props to manage structure and data flow. Let's dive into these fundamental concepts!
What is a Component?
A component is a reusable piece of code that encapsulates HTML, CSS, and JavaScript. Think of it as a building block for your app. 🏗️
- Functional Components: Defined using
function
or arrow functions. - Class Components: Use ES6 classes (less common in modern React).
- Component Lifecycle: Learn more about React State and Lifecycle for advanced use.
📌 Example: A button component can be reused across your application with different props.
Props: Passing Data
Props (short for properties) are inputs passed to components. They allow customization and communication between components. 📡
- Immutable: Props should not be modified inside the component.
- Default Props: Set default values for props using
defaultProps
. - Type Checking: Use TypeScript or
prop-types
for validation.
Best Practices
- Always use
props
to pass data, not through state. - Keep components focused on a single responsibility.
- Use
children
prop for nested content. 🌱
For a deeper understanding of React's architecture, check out our official documentation. 🚀