https://www.gjwprostejov.cz/skripty/Banner.php?1614561334

1
2$(function () {
3
4  var $body = $('body'),
5      $slides = $('.js-slide'),
6      totalSlides = $slides.length,
7      slidePosition = 0;
8
9  if (totalSlides > 1) {
10    bannerShowSlide(slidePosition);
11  }
12
13  $body.delegate('.js-slide-prev', 'click', function(event) {
14    event.preventDefault();
15
16    if (slidePosition == 0) {
17      slidePosition = totalSlides - 1;
18    }
19    else {
20      slidePosition = slidePosition - 1;
21    }
22    bannerShowSlide(slidePosition);
23
24    return false;
25  });
26
27  $body.delegate('.js-slide-next', 'click', function (event) {
28    event.preventDefault();
29
30    if (slidePosition < (totalSlides - 1)) {
31      slidePosition = slidePosition + 1;
32    }
33    else {
34      slidePosition = 0;
35    }
36    bannerShowSlide(slidePosition);
37
38    return false;
39  });
40
41});
42
43function bannerShowSlide(slidePosition) {
44  var $slides = $('.js-slide');
45  $slides.removeClass('is-visible');
46  $slides.eq(slidePosition).addClass('is-visible');
47}