shugo/test.html

## test.html
<html>
  <script src="https://cdn.jsdelivr.net/npm/ruby-head-wasm-wasi@0.5.0/dist/browser.script.iife.js"></script>
  <script type="text/ruby">
    require "js"

    document = JS.global[:document]
    window = JS.global[:window]

    start = document.getElementById("start")
    counter = document.getElementById("counter")
    start.addEventListener("click") do |e|
      10.times do |i|
        p i
        counter[:innerText] = i.to_s
        p JS.eval('return new Promise((ok) => setTimeout(ok(42), 1000))').await
      end
    end
  </script>

  <button id="start">Start</button>
  <div id="counter">0</div>
</html>
	<html>
	<script src="https://cdn.jsdelivr.net/npm/ruby-head-wasm-wasi@0.5.0/dist/browser.script.iife.js"></script>
	<script type="text/ruby">
	require "js"

	document = JS.global[:document]
	window = JS.global[:window]

	start = document.getElementById("start")
	counter = document.getElementById("counter")
	start.addEventListener("click") do \|e\|
	10.times do \|i\|
	p i
	counter[:innerText] = i.to_s
	p JS.eval('return new Promise((ok) => setTimeout(ok(42), 1000))').await
	end
	end
	</script>

	<button id="start">Start</button>
	<div id="counter">0</div>
	</html>