React design patterns are reusable solutions to common problems that developers face when building React applications. These patterns help improve code organization, maintainability, and scalability. Here are some key React design patterns:
- Description: Break down the UI into smaller, reusable components and compose them together to build complex interfaces.
- Use Case: Building modular and reusable components.
- Example: Combining
Header,Sidebar, andMainContentcomponents to create aLayoutcomponent.
- Description: Separate logic (container components) from UI (presentational components)
- Use Case: Improving code readability and reusability.
- Example: A
UserListContainerfetches data and passes it to aUserListpresentational component for rendering.
- Controlled: Form data is handled by React state.
- Uncontrolled: Form data is handled by the DOM itself.
- Use Case: Managing form inputs and their state.
- Description: A function that takes a component and returns a new component with additional props or functionality.
- Use Case: Sharing logic across multiple components (e.g., authentication, logging).
- Example:
withAuth(ProfilePage)to add authentication logic to theProfilePagecomponent.
- Description: Encapsulate reusable logic in custom hooks.
- Use Case: Sharing logic across multiple components.
- Example: A
useFetchhook to handle API requests.
- Description: Components that render themselves recursively (e.g., for nested data structures like trees).
- Use Case: Rendering hierarchical data.
- Example:
const TreeNode = ({ node }) => (
<div>
<span>{node.name}</span>
{node.children && node.children.map((child) => (
<TreeNode key={child.id} node={child} />
))}
</div>
);Partial application is a functional programming technique where a function is pre-filled with some of its arguments, creating a new function that takes the remaining arguments. It allows you to specialize or customize a general function for specific use cases.