<?php
...

var value = $.trim($(this).val());

if ($(this).hasClass(invalidClass))
...

<?php
/**
 * To validate an email address according to RFCs 5321, 5322 and others
...

def __init__(self, month, day, year):
        if type(month) != int:
            raise NotIntegerError, "month must be an integer"
...

def create   
    case params[:event][:kind]
    when "appointment"
...

class Round < ActiveRecord::Base
  belongs_to :season
...

define("MAX_INFO_SIZE",500);
define("MAX_DATA_SIZE",100000);
define("MAX_THUMBNAIL_SIZE",10000);
...

//function that loops through the elements
function __validateForm(theform){
...