Great project 👍 Wasm is the future of webdev and go is an awesome langage.
Could be interesting to add a chapter in the readme file with examples of projects using this webapi in go. The syntax to call some html / js is not trivial.
For all purpose, I'm currently working on an HTML5 interactive chart, 100% in go, based on canvas and wasm via this webapi: https://github.com/sunraylab/gowebstockchart