Not exactly what you’re saying, but a bit closer. With this library you set what css classes on the page are “hot”, it fetches the next page state and replaces that part of the page with the new state: https://github.com/robrohan/diffy

Thanks for the feedback! The RDFa `resource` attribute is an interesting angle I hadn't considered. That said, µJS's default behavior actually requires zero `mu-` attributes; it intercepts standard `href` links and `action` forms out of the box. The `mu-` attributes are only needed when you want to override the default behavior, use patch mode (updating multiple DOM fragments in a single request), or trigger requests from elements that are not links or forms. So in the simplest case, a single `mu.init()` call is all you need. That said, if you want something even more minimal, htmz takes that philosophy to the extreme.