Preprocessed CSS vs CSS-in-JS

Developers should learn preprocessed CSS when working on large-scale web projects where CSS maintenance becomes complex, as it reduces code duplication and improves organization through features like variables and mixins meets developers should use css-in-js when building modern web applications with frameworks like react, vue, or angular, as it provides scoped styling that prevents global css conflicts and supports dynamic theming. Here's our take.

Preprocessed CSS

Nice Pick

Developers should learn preprocessed CSS when working on large-scale web projects where CSS maintenance becomes complex, as it reduces code duplication and improves organization through features like variables and mixins

Pros

• It's particularly useful in team environments for enforcing consistency and in responsive design for managing breakpoints and themes efficiently
• Related to: sass, less

Cons

• Specific tradeoffs depend on your use case

CSS-in-JS

Developers should use CSS-in-JS when building modern web applications with frameworks like React, Vue, or Angular, as it provides scoped styling that prevents global CSS conflicts and supports dynamic theming

Pros

• It's particularly useful for large-scale projects where maintainability and component isolation are priorities, and when leveraging JavaScript's power for conditional or runtime styling
• Related to: react, javascript

Cons

• Specific tradeoffs depend on your use case

The Verdict

These tools serve different purposes. Preprocessed CSS is a tool while CSS-in-JS is a library. We picked Preprocessed CSS based on overall popularity, but your choice depends on what you're building.

The Bottom Line

Preprocessed CSS wins

Based on overall popularity. Preprocessed CSS is more widely used, but CSS-in-JS excels in its own space.