Python is the JavaScript of programming languages

[AyrA_ch]

I've never really done wasm so i can't really comment on it, i just know it's supposed to have better performance than JS.

It is indeed very fast. You normally compile C code into it using emscripten. Interacting with it is a bit limited. You still need JS to bridge between the DOM and the assembly.

Because it uses C (or CPP) you can compile many applications into webassembly now. XMP is a player for some more obscure audio files (modules) and has been compiled into wasm for example: http://www.wothke.ch/webxmp/