Type scales can be difficult to maintain, but CSS Custom Properties can help. If you have ever had to design a type scale, you know that, like grids, it can require quite a lot of calculations. …

How the rainbow spreadsheet helped evaluate Harvard’s new visualizations-based course-selection tool. — Last November I helped moderate twelve usability tests to evaluate Curricle, a visualizations-driven course-selection platform for Harvard University. The web application was still in beta and the product team wanted to know if students understood how to use the tool and if they found the tool enjoyable. In the end…

In the past few years, React has become one of the most popular JavaScript libraries. Several aspects make React a powerful tool for creating interactive user interfaces. This article describes some of the key concepts that every beginner should understand. ES6 The first thing to know about React is that it…