Retrieving Input Text Value
http://stackoverflow.com/questions/14329908/retrieving-input-text-value/14329950#14329950
HTML
<form>
Enter hash here: <input type="text" name="hash">
<button type="button">Retrieve Url</button>
</form>
JavaScript
$('button').click(function() {
$('form').attr('action', '/tasks/'+$('input[type="text"]').val()).submit();
});