WiiDuktape/source/game.js

const PAD_BUTTON_START = 0x1000;
const PAD_BUTTON_A = 0x0100;

function start() {
}

function update() {
	const pressed = wii.pad.buttons_down();

	if (pressed & PAD_BUTTON_START) {
		wii.print("exiting from js");
		wii.exit();
	}

	if (pressed & PAD_BUTTON_A) {
		wii.print("a pressed");
	}

	wii.grrlib.fill_screen();
}