A basic example of the use of Squirrel.js.

squirrel.basic.html

<form action="/blah" method="post" class="squirrel">
  <!-- any form fields you like :) -->
</form>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="jquery.squirrel.min.js"></script>