[JimDabell]

DHTML was long before XHR; the term was more or less already out of fashion by the time XHR came along.

DHTML was used for situations like when you had hierarchical selects where the contents of the second select depended upon what you picked for the first select. All the code and data was delivered up front with the page load; you didn’t go back to the server for it with XHR.

[kevindamm]

That's right, I think I let the concepts overlap in my head a bit. Back then I was mostly doing game dev for PCs and some backend work. I remember pre-web 2.0 (loading a whole new page just to see the next tile over on MapQuest or Yahoo!Maps was.. annoying) but my just-waking mind probably confused dynamic to also mean dynamically-loaded. I shouldn't jump on HN before getting out of bed. I would delete my GP comment if I could.

The ability to pull down new results and load them was largely enabled by DHTML, though, because you still need a way to update the page with the new data. But now that I'm more awake I agree DHTML and the unrelated web2.0 features are different things.