I am also trying to learn wasm via the zig route:

* A minimal example showing how HTML5's canvas, wasm memory and zig can interact: https://github.com/daneelsan/minimal-zig-wasm-canvas

* This mini game shows how Zig, WASM, Javascript and HTML5 canvas can interact: https://github.com/daneelsan/Dodgeballz

* WEFX is a simple graphics drawing package using Zig, WASM, and an HTML canvas: https://github.com/daneelsan/zig-wefx