Drupal & parsley.js - very quick method to enable parsley.js on drupal forms. Create a drupal module, in this case, I've called it parsley_form and enable it.

mymodule.info

; $Id: $
name = Parsley.js form enabler
description = Adds necessary elements to form to enable parsley.js validation
core = 7.x

mymodule.module

<?php

/**
 * @file
 * quick method to enable parsley.js on drupal forms
 */
function mymodule_form_alter(&$form, &$form_state, &$form_id) {
  $form['#attributes'] = array('parsley-validate' => array('parsley-validate'));
}