CSS modules is an early and influential implementation of the CSS-in-JS idea. The project on GitHub has over 16,000 stars, but hasn’t been updated in several years.

Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.

At its I/O 2025 developer conference, Google launched Stitch, an AI-powered tool to help design web and mobile app frontends by generating the necessary UI elements and code.

Dashboard has been variously described as the return of Desk Accessories, ... made up of HTML, CSS, and JavaScript, plenty of third-party developers will be cranking them out, too.