validation form script

validation.js

function validateThis(form) {
	var
		textType = form.find("[data-validation='text']"),
		mailType = form.find("[data-validation='mail']");

	textType.each(function(){
		var
			$this = $(this),
			emptyField = $this.val() == '';

		if (emptyField) {
			$this.tooltip({
				content     : 'Заполните поле',
				position    : 'left'
			});

			$this.addClass('error');
		} else {
			$this.removeClass('error');
		}
	});

	mailType.each(function(){
		var
			$this = $(this),
			regExp = /^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/,
			isMail = regExp.test($this.val());

		if (isMail) {
			$this.removeClass('error');
		} else {
			$this.tooltip({
				content     : 'Невалидный e-mail',
				position    : 'top'
			});

			$this.addClass('error');
		}
	});


	return form.find('.error').length == 0;
}