Data Sharing Between JavaScript and CSS

In the article, Christian Heilmann discusses how to share data between CSS and JavaScript using custom properties, which are also known as CSS variables. Modern web applications often require different layers—the visual and the interactive—to communicate effectively with each other. The author emphasizes that CSS can store values that can then be used by JavaScript to modify the user interface. This gives developers greater flexibility and simplifies workflows, eliminating the need for coordinating two separate sets of data. Heilmann provides concrete examples of how to utilize custom properties for effective operation in both CSS and JavaScript. Ultimately, he notes that using this technique can expedite application development and enhance its quality, which is crucial in the fast-changing world of web technologies.