I have been working on a way to continue using Flash style programming in the WebApp universe. So i have created a transpiler that emits either AS3 code (which could be modified for Haxe), or JS code (for web apps), with a uniform runtime.
It’s a free tool, a language called Beads, which you can find at www.beadslang.org
You don’t have to learn HTML / CSS / JS/Frameworks.
It has a novel layout system, but Flash programmers will find it very familiar in many ways, although i did adopt Python’s indent significant syntax. I invite you all to take it for a spin.