Is there any way to get read/write access to DOM and/or the WebAPIs(i.e. fullscreen API) without JavaScript?
I'm trying to build a basic application in C(C source being actually the result of transpilation from a GC language). The app I'm building will run as Desktop app(it's not meant to run in "real" browsers yet) so I can tweak the environment(i.e. the layout engine) if necessary.
Answer
In the WebAssembly Minimal Viable Product the only way to call into and out of WebAssembly is through imports and exports. In the future, WebAssembly may gain capabilities which allow the embedder expose APIs directly, in a browser embedding this could include the DOM.
Imports and exports aren't very complicated though: from your C code's point of view they just look like an extern call, similar to a DLL on the Windows platform. You'd likely compile the C code using Emscripten, see its documentation "Call JavaScript functions from C/C++" for details on how this works (since this isn't the question you're asking, but I'm guessing it's the next question).
It's not clear from your question if you:
- Want to compile C code and run it within WebAssembly inside a browser.
- Want to compile C code and run it within WebAssembly outside a browser.
Or both.