https://trtfn.com/wp-content/themes/scalia/js/checkbox.js?ver=6.0.16

1(function($) {
2	$.fn.checkbox = function() {
3		$(this).each(function() {
4			var $el = $(this);
5			var typeClass = $el.attr('type');
6			$el.hide();
7			$el.next('.'+typeClass+'-sign').remove();
8			var $checkbox = $('<span class="'+typeClass+'-sign" />').insertAfter($el);
9			$checkbox.click(function() {
10				if($el.attr('type') == 'radio') {
11					$el.prop('checked', true).trigger('change').trigger('click');
12				} else {
13					$el.prop('checked', !($el.is(':checked'))).trigger('change');
14				}
15			});
16			$el.change(function() {
17				console.log($el);
18				$('input[name="'+$el.attr('name')+'"]').each(function() {
19					if($(this).is(':checked')) {
20						$(this).next('.'+$(this).attr('type')+'-sign').addClass('checked');
21					} else {
22						$(this).next('.'+$(this).attr('type')+'-sign').removeClass('checked');
23					}
24				});
25			});
26			if($el.is(':checked')) {
27				$checkbox.addClass('checked');
28			} else {
29				$checkbox.removeClass('checked');
30			}
31		});
32	}
33})(jQuery);