Styled Components
Styled Components is a popular CSS-in-JS library for React and React Native that allows developers to write actual CSS code to style components directly within JavaScript files. It uses tagged template literals to create styled React components, enabling scoped styles, dynamic styling based on props, and easy theming. This approach eliminates class name bugs, enhances component reusability, and integrates seamlessly with the React component model.
Developers should learn Styled Components when building React applications that require maintainable, scalable, and dynamic styling, especially in component-driven architectures. It is ideal for projects needing theme support, server-side rendering, or where CSS-in-JS benefits like colocation of styles and logic are prioritized. Use cases include modern web apps, design systems, and applications with complex UI states that benefit from prop-based styling.