http://www.zupa-bugojno.org/wp-content/plugins/vamtam-love-it/includes/js/love-it_ver-6.5.4.js

1(function($, undefined) {
2	'use strict';
3
4	$(function() {
5		if(!love_it_vars.logged_in) {
6			$('.love-it').each(function() {
7				if( $.cookie('loved-' + $(this).data('post-id')) ) {
8					$(this).parent().prepend( '<span class="loved"><span class="loved-text">' + love_it_vars.already_loved_message + '</span>');
9					$(this).remove();
10				}
11			});
12		}
13
14		$('body').on('click', '.love-it', function() {
15			var $this = $(this);
16
17			var post_id = $this.data('post-id');
18			var user_id = $this.data('user-id');
19			var post_data = {
20				action: 'love_it',
21				item_id: post_id,
22				user_id: user_id,
23				love_it_nonce: love_it_vars.nonce
24			};
25
26			if($this.hasClass('loved') || (!love_it_vars.logged_in && $.cookie('loved-' + post_id))) {
27				alert(love_it_vars.already_loved_message);
28				return false;
29			}
30
31			$.post(love_it_vars.ajaxurl, post_data, function(response) {
32				if(response === 'loved') {
33					$this.addClass('loved');
34					var count_wrap = $this.next();
35					var count = count_wrap.text();
36					count_wrap.text(parseInt(count, 10) + 1);
37
38					if(!love_it_vars.logged_in) {
39						$.cookie('loved-' + post_id, 'yes', { expires: 1 });
40					}
41				} else {
42					alert(love_it_vars.error_message);
43				}
44			});
45			return false;
46		});
47	});
48})(jQuery);