It is time to cast the long-teased new magic by DHH & Co. and learn to use Hotwire beyond 5-minute tutorials. The umbrella name behind libraries for building modern web interfaces seemingly without any effort or JavaScript is on everyone’s lips since the big unveil this year. The HTML-over-the-wire approach is making ripples through the Rails universe: countless blog posts, reddits, screencasts, and five RailsConf talks this year, including the one by yours truly, are dedicated to it. Here, I want to take more space to explain Hotwire thoroughly—with code examples and testing strategies. As my favorite rock band would say, let’s get Hotwired to… self-destruct learn new tricks!.