Hyper useful, ready to use HTML5 snippets
<a href="tel:1-408-555-5555">1-408-555-5555</a>
<a href="sms:1-408-555-1212">New SMS Message</a>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled</title>
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<body>
</body>
</html>
<input type="text" title="email" required pattern="[^@]+@[^@]+\.[a-zA-Z]{2,6}" />
<form action="http://maps.google.com/maps" method="get" target="_blank">
<label for="saddr">Enter your location</label>
<input type="text" name="saddr" />
<input type="hidden" name="daddr" value="350 5th Ave New York, NY 10018 (Empire State Building)" />
<input type="submit" value="Get directions" />
</form>
<!-- will download as "expenses.pdf" -->
<a href="/files/adlafjlxjewfasd89asd8f.pdf" download="expenses.pdf">Download Your Expense Report</a>
<style>*{position:relative}</style><table><input></table>
<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7">
<input name="frameworks" list="frameworks" />
<datalist id="frameworks">
<option value="MooTools">
<option value="Moobile">
<option value="Dojo Toolkit">
<option value="jQuery">
<option value="YUI">
</datalist>