jsFiddleとの連携デモ http://jsfiddle.net/gh/gist/jquery/1.6/1007809/

fiddle.css

body {
	font-family: Helvetica, Verdana
}
p {
	padding: 7px 10px;
}
#demo {
	border: 1px solid #999;
}

fiddle.html

<div id="demo"><p>このメッセージは、３秒後に変わります。</p></div>

fiddle.js

$(function() {
	$.ajax({
		type: "GET",
		url: "/gh/gist/response.html/1007809/",
		data: {
			"delay": 3
		},
		dataType: "html"
	}).success(function(data, textStatus, jqXHR) {
		$("#demo").html(data);
	});
});

fiddle.manifest

name: Sample 1
description: Sample 1
authors:
  - tokkonopapa
resources:
  - https://getfirebug.com/firebug-lite-debug.js
normalize_css: yes

fiddle.response.html

<p>この <span>コンテンツ</span> は Gist 上にあります。</p>
<p><span>JavaScript</span> コードが、幾つかの span の背景色を変えます。</p>
<script type='text/javascript'>
	$('#demo span').each(function() {
		$(this).css({backgroundColor: '#ffb'});
	});
</script>

fiddle.response.js

self.onmessage = function(event) {
	// from から to までの素数を見つける
	var n = event.data.from;
	var to = event.data.to;
	for (; n <= to; n++) {
		var found = false;
		var n2 = Math.sqrt(n);
		for (var i = 2; i <= n2; i++) {
			if (n % i == 0) {
				found = true;
				break;
			}
		}
		if (!found) {
			postMessage(n);
		}
	}
}

fiddle.response.json

{ "test": "demo" }

fiddle.response.xml

<demo>test</demo>