Agreed. It's weird. If the goal is to extend HTML elements, should just send the compound elements definition with the html. The image should just be refered b

Agreed. It's weird. If the goal is to extend HTML elements, should just send the compound elements definition with the html. The image should just be refered by a src attribute of user-avatar. But in any case, you still want javascript if you have to change something dynamically. People are hell-bent on using a static markup language designed for static documents even if it doesn't fit. Ok it's slow but that's another problem.