Javascript E-Mail Validation

validate.mail.js

var error = false;
var pattern = /^([a-zA-Z0-9+_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
var mailAddress = 'mail@example.com';

if(!pattern.test(mailAddress))
{
	error = true;
}