[karakym]

Вот как проходит валидация форм:

// Request Demo Form
{
	// Variables
	{
		/* Inputs
		var $demo = $('#request-demo'),
	    	$popup = $('#request-popup'),
	    	requestForm = $demo.length ? $demo : $popup;
*/
		var requestForm = $('#request-demo'),

			fullNameInput = $('#fullName'),
			fullNameError = false, 

			phoneNumberInput = $('#phoneNumber'),
			phoneNumberError = false,

			emailInput = $('#email'),
			emailError = false,

			messageInput = $('#message'),
			messageError = false,

			numberCheck = /^\+?[0-9]+$/,
			specialCharactersCheck = /^[а-яА-ЯёЁa-zA-Z0-9- ]*$/,
			emailCheck = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
	}

	// Inputs Validations
	{
		var fullNameValidate = function(){
			var fullNameVal = fullNameInput.val();
			if(!fullNameVal.trim() || fullNameVal == null || fullNameVal == "" || !fullNameVal.match(specialCharactersCheck)){
				fullNameInput.addClass('invalid').removeClass('valid');
				fullNameError = true;
				// $('html, body').animate({scrollTop: fullNameInput.offset().top - 100}, 1000);
			}else{
				fullNameInput.removeClass('invalid').addClass('valid');
				fullNameError = false;
			}

			return fullNameError;
		}
		fullNameInput.on('keyup focusout blur', function(e){
			fullNameValidate();
		});

		var phoneNumberValidate = function(){
			var phoneNumberVal = phoneNumberInput.val();


			if(phoneNumberVal == null || phoneNumberVal == "" || !phoneNumberVal.match(numberCheck)){
				phoneNumberInput.addClass('invalid').removeClass('valid');
				phoneNumberError = true;
				// $('html, body').animate({scrollTop: phoneNumberInput.offset().top - 100}, 1000);
			}else{
				phoneNumberInput.removeClass('invalid').addClass('valid');
				phoneNumberError = false;
			}
			return phoneNumberError;
		}
		phoneNumberInput.on('keyup focusout blur', function(e){
			phoneNumberValidate();
		});

		var emailValidate = function(){
			var emailVal = emailInput.val(); 

			if(!emailVal.trim() || emailVal == null || emailVal == "" || !emailVal.match(emailCheck)){
				emailInput.addClass('invalid').removeClass('valid');
				emailError = true;
				// $('html, body').animate({scrollTop: emailInput.offset().top - 100}, 1000);
			}else{
				emailInput.removeClass('invalid').addClass('valid');
				emailError = false;
			}
			return emailError;
		}
		emailInput.on('keyup focusout blur', function(e){
			emailValidate();
		});

		var messageValidate = function(){
			var messageVal = messageInput.val();
			if(!messageVal.trim() || messageVal == null || messageVal == ""){
				messageInput.removeClass('invalid').removeClass('valid');
			}else{
				messageInput.addClass('valid').removeClass('invalid');
			}
		}
		messageInput.on('keyup focusout blur', function(e){
			messageValidate();
		});

		$('.close-requested').on('click', function(){
			requestForm.removeClass('requested');
		})
	}