The web browser is the world’s most ubiquitous user interface. Sadly, this means we’re all basically stuck in an abusive relationship with JavaScript At first glance, PureScript looks and feels like Haskell, but there’s hardly any extraneous machinery. The PureScript compiler generates very concise JS, and the language itself is designed with the platform’s constraints in mind. It turned out to be a delight, getting out of my tangled mess of JavaScript and rebuilding it all in PureScript, and I’d like to show you how and why.