wasm-bindgen/examples/console_log/README.md

console.log

This directory is an example of using the #[wasm_bindgen] macro to import the console.log function and call it

You can build the example with:

$ ./build.sh

(or running the commands on Windows manually)

and then opening up index.html in a web browser should show a dialog!

For more information about this example be sure to check out hello_world which also has more comments about caveats and such.