I remember when it first came out, and the tech media was considering it the best thing ever. I have played around with it, and it is more stable than flash, as well as being more open. But everyone still uses Adobe’s crappy 1990s software that crashes half the time. What happened to HTML5?
I’m not clear what the question is. HTML5/CSS3 is one of the foundations of modern web technology; I stopped using anything else once the browser support was there, about two years ago.
If you’re asking “why doesn’t anyone use the vague, hand-flapping, poorly-implemented notion of HTML5 as a video, motion, animation and interactivity platform instead of that crappy old Flash”… well, that’s because HTML5 as a replacement for Flash is somewhat behind HTML5 as a cleaned up and streamlined web language. As in, you can do more with animated GIFs than with HTML5 video and animation coding, and until it matches the feature set of Flash, it’s going to remain a niche choice for die-hard Appleistas and Flash haters.
js/HTML5/CSS3 are the tools of trade now a days. Anything being designed now are using those technologies to achieve pretty much everything they need to achieve on the client side.
support for HTML5 Video tag was a bit slow to get going thanks to bickering between the usual suspects (the browser companies), but now it’s used pretty widely out there, including by giants like Youtube.
Interactive client side applications are also being done with js now a days, and things like games or apps that relied a lot on quick draw calls to the screen are also being written in Js thanks to increased support for the HTML5 canvas element and 3D API support.