ambar/ie6_crash.html

## ie6_crash.html
<html>
<head>
	<title></title>
</head>
<body>

<div>
	<script>
		document.body.appendChild( document.createElement('script') )
	</script>
</div>

</body>
</html>

## improved.js
(function(doc,id) {
  var t   = doc.createElement('script');
  t.async = true;
  t.src   = '//hm.baidu.com/h.js?'+id;
  (doc.head || doc.body).appendChild(t);
})(document,'baidu_hash_id')

## improved_v2.js
(function(doc,tag,src) {
  var e = doc.createElement(tag), s = doc.getElementsByTagName(tag)[0]; e.async = e.src = src; s.parentNode.insertBefore(e, s);
})(document,'script','//domain/analytics.js')

## original.js
  var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
  document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3Fhash_id' type='text/javascript'%3E%3C/script%3E"));

## sinatra-server.rb
require 'sinatra'

get '/h.js' do
  sleep(2)
  content_type 'application/javascript'
  <<-js
  (function (msg) {
    var now = function () { return +new Date() }
    var begin = now();
    while (now() - begin < 2000) {}
    console.log(msg, now());
  })('h.js loaded. ');
  js
end
	<html>
	<head>
	<title></title>
	</head>
	<body>

	<div>
	<script>
	document.body.appendChild( document.createElement('script') )
	</script>
	</div>

	</body>
	</html>
	(function(doc,id) {
	var t = doc.createElement('script');
	t.async = true;
	t.src = '//hm.baidu.com/h.js?'+id;
	(doc.head \|\| doc.body).appendChild(t);
	})(document,'baidu_hash_id')
	(function(doc,tag,src) {
	var e = doc.createElement(tag), s = doc.getElementsByTagName(tag)[0]; e.async = e.src = src; s.parentNode.insertBefore(e, s);
	})(document,'script','//domain/analytics.js')
	var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
	document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3Fhash_id' type='text/javascript'%3E%3C/script%3E"));
	require 'sinatra'

	get '/h.js' do
	sleep(2)
	content_type 'application/javascript'
	<<-js
	(function (msg) {
	var now = function () { return +new Date() }
	var begin = now();
	while (now() - begin < 2000) {}
	console.log(msg, now());
	})('h.js loaded. ');
	js
	end