https://www.rea.ru/js/home-events-slim.js?1791566624

1$('.home-events-slim-filter .section-events__filter-btn').on('click',function() {
2    $('.section-events__filter-item').removeClass('section-events__filter-item--active');
3    $(this).parent().addClass('section-events__filter-item--active');
4
5    var tag = $(this).data('tag');
6
7    $(".home-events-slim-ul li").each(function()
8    {
9        $(this).addClass('hide');
10    });
11
12    if(tag)
13    {
14        $(".home-events-slim-ul li").each(function()
15        {
16            var array = $(this).data('tags');
17            if($.inArray(tag,array)!=-1)  $(this).removeClass('hide');
18        })
19    }
20    else
21    {
22        $(".home-events-slim-ul li").each(function()
23        {
24            $(this).removeClass('hide');
25        });
26    }
27});