Before React, Vue, or Tailwind, there was YUI. Created by Yahoo! in 2005, it was one of the first "heavyweight" JavaScript libraries designed to make the internet feel interactive. At the time, browsers were wildly inconsistent; YUI acted as a bridge, ensuring a dropdown menu worked the same in Internet Explorer 6 as it did in early Firefox.
was a dominant force in defining how we built the web. yui-gen13
While the "gen13" tag might be fading into history, the lessons of modularity and abstraction it taught us are the foundation of every app you use today. Before React, Vue, or Tailwind, there was YUI