https://salonzabava.ru/wp-content/plugins/jquery-validation-for-co…/assets/js/jvcf7_validation.js?ver=5.4.2

1// VALIDATION CODES
2jQuery(document).ready(function(){
3	
4	jQuery('.wpcf7-validates-as-required').addClass('required');
5	jQuery('.wpcf7-email').addClass('email');
6	jQuery('.wpcf7-checkbox.wpcf7-validates-as-required input').addClass('required');
7	jQuery('.wpcf7-radio input').addClass('required');
8	
9	jQuery('form.wpcf7-form').each(function(){
10		jQuery(this).addClass(scriptData.jvcf7_default_settings.jvcf7_invalid_field_design);
11		jQuery(this).addClass(scriptData.jvcf7_default_settings.jvcf7_show_label_error);
12		jQuery(this).validate({
13			ignore: ":hidden input, :hidden textarea, :hidden select", // FOR Hidden element
14			onfocusout: function(element) { // ADD VALIDATION ON BLUR
15		        this.element(element);  
16		    },
17			onfocusout: function(element) { // ADD VALIDATION ON BLUR
18		        this.element(element);  
19		    },
20			errorPlacement: function(error, element) {
21	            if (element.is(':checkbox') || element.is(':radio')){
22	            	error.insertAfter(jQuery(element).parent().parent().parent());
23	            } else {
24	            	error.insertAfter(element);
25	            }
26         	}
27		});
28	});
29
30	jQuery('.wpcf7-form-control.wpcf7-submit').click(function(e){ 
31		$jvcfpValidation 	=	jQuery(this).parents('form');		
32		if (!jQuery($jvcfpValidation).valid()){
33			e.preventDefault();
34			$topErrorPosition 		= jQuery('.wpcf7-form-control.error').offset().top;
35			$topErrorPosition		= parseInt($topErrorPosition) - 100;
36			jQuery('body, html').animate({scrollTop:$topErrorPosition}, 'normal');
37		}
38	});	
39});
40
41jQuery.validator.addMethod("email", 
42    function(value, element) {
43        return this.optional(element) || /^[+\w-\.]+@([\w-]+\.)+[\w-]{2,10}$/i.test(value);
44    },"Please enter a valid email address"
45);
46
47jQuery.validator.addMethod("letters_space", function(value, element) {
48  return this.optional(element) || /^[a-zA-Z ]*$/.test(value);
49}, "Letters and space only");