https://spacewaves2.net/template/default/js/ad-slot-lazy.js

1(function () {
2  'use strict';
3
4  var SANDBOX = 'allow-scripts allow-same-origin allow-popups';
5
6  function isBannerHost(host) {
7    return (
8      host.classList.contains('ad-slot-host--banner') ||
9      !!(host.closest && host.closest('.banner-ad-wrap'))
10    );
11  }
12
13  function isListRailHost(host) {
14    return (
15      host.classList.contains('ad-slot-host--list-rail') ||
16      !!(host.closest && host.closest('.GAMES-layout__rail'))
17    );
18  }
19
20  function bannerMobileMax(host) {
21    var wrap = host.closest ? host.closest('.banner-ad-wrap') : null;
22    var raw = wrap && wrap.getAttribute('data-ad-mobile-max');
23    var n = parseInt(raw, 10);
24    return n > 0 ? n : 768;
25  }
26
27  function listRailMax(host) {
28    var rail = host.closest ? host.closest('.GAMES-layout__rail') : null;
29    var raw = rail && rail.getAttribute('data-ad-rail-max');
30    var n = parseInt(raw, 10);
31    return n > 0 ? n : 1100;
32  }
33
34  function skipBannerOnMobile(host) {
35    if (!isBannerHost(host)) return false;
36    if (!window.matchMedia) return false;
37    var max = bannerMobileMax(host);
38    if (!window.matchMedia('(max-width: ' + max + 'px)').matches) return false;
39    host.setAttribute('data-ad-loaded', '1');
40    var wrap = host.closest('.banner-ad-wrap');
41    if (wrap) {
42      wrap.style.display = 'none';
43      wrap.setAttribute('hidden', '');
44    }
45    return true;
46  }
47
48  function skipListRailOnNarrow(host) {
49    if (!isListRailHost(host)) return false;
50    if (!window.matchMedia) return false;
51    var max = listRailMax(host);
52    if (!window.matchMedia('(max-width: ' + max + 'px)').matches) return false;
53    host.setAttribute('data-ad-loaded', '1');
54    var rail = host.closest('.GAMES-layout__rail');
55    if (rail) {
56      rail.style.display = 'none';
57      rail.setAttribute('hidden', '');
58    }
59    var layout = host.closest('.GAMES-layout');
60    if (layout) layout.classList.add('GAMES-layout--no-rail');
61    return true;
62  }
63
64  function mountIframe(host) {
65    if (host.getAttribute('data-ad-loaded') === '1') return;
66    if (skipBannerOnMobile(host)) return;
67    if (skipListRailOnNarrow(host)) return;
68
69    var src = host.getAttribute('data-ad-iframe-src');
70    if (!src) return;
71
72    host.setAttribute('data-ad-loaded', '1');
73
74    var height = host.getAttribute('data-ad-height') || '250';
75    var width = host.getAttribute('data-ad-width');
76
77    var iframe = document.createElement('iframe');
78    iframe.className = 'ad-slot-iframe';
79    iframe.title = host.getAttribute('data-ad-title') || 'Advertisement';
80    iframe.setAttribute('loading', host.getAttribute('data-ad-eager') === '1' ? 'eager' : 'lazy');
81    iframe.setAttribute('scrolling', 'no');
82    iframe.setAttribute('sandbox', SANDBOX);
83    iframe.setAttribute('referrerpolicy', 'no-referrer-when-downgrade');
84    iframe.setAttribute('src', src);
85    iframe.style.border = '0';
86    iframe.style.display = 'block';
87    iframe.style.background = 'transparent';
88
89    if (width) {
90      iframe.style.width = width + 'px';
91      iframe.style.maxWidth = '100%';
92      iframe.style.marginLeft = 'auto';
93      iframe.style.marginRight = 'auto';
94      iframe.setAttribute('width', width);
95    } else {
96      iframe.style.width = '100%';
97    }
98
99    iframe.style.height = height + 'px';
100    iframe.style.minHeight = height + 'px';
101    iframe.setAttribute('height', height);
102
103    host.appendChild(iframe);
104  }
105
106  function applyHostHeight(selector, h, alsoWrap) {
107    var px = parseInt(h, 10);
108    if (!px || px < 36) return;
109    document.querySelectorAll(selector).forEach(function (host) {
110      if (host.getAttribute('data-ad-loaded') === '1' && !host.querySelector('.ad-slot-iframe')) return;
111      var iframe = host.querySelector('.ad-slot-iframe');
112      host.style.height = px + 'px';
113      host.style.minHeight = px + 'px';
114      host.style.maxHeight = px + 'px';
115      if (iframe) {
116        iframe.style.height = px + 'px';
117        iframe.style.minHeight = px + 'px';
118        iframe.style.maxHeight = px + 'px';
119        iframe.setAttribute('height', px);
120      }
121    });
122    if (alsoWrap) {
123      document.querySelectorAll('.banner-ad-wrap').forEach(function (wrap) {
124        if (wrap.hasAttribute('hidden')) return;
125        wrap.style.minHeight = px + 16 + 'px';
126      });
127    }
128  }
129
130  window.addEventListener('message', function (ev) {
131    var data = ev && ev.data;
132    if (!data || data.type !== 'mymps-ad-slot-resize') return;
133    if (data.slot === 'banner') {
134      applyHostHeight('.ad-slot-host--banner, .banner-ad-wrap .ad-slot-host', data.height, true);
135    }
136  });
137
138  function startAdSlots() {
139    var hosts = document.querySelectorAll('.ad-slot-host[data-ad-iframe-src]');
140    if (!hosts.length) return;
141
142    if (!('IntersectionObserver' in window)) {

143      hosts.forEach(mountIframe);
144      return;
145    }
146
147    var observer = new IntersectionObserver(
148      function (entries) {
149        entries.forEach(function (entry) {
150          if (!entry.isIntersecting) return;
151          mountIframe(entry.target);
152          observer.unobserve(entry.target);
153        });
154      },
155      { rootMargin: '240px 0px', threshold: 0.01 }
156    );
157
158    hosts.forEach(function (host) {
159      if (skipBannerOnMobile(host)) return;
160      if (skipListRailOnNarrow(host)) return;
161      if (host.getAttribute('data-ad-eager') === '1') {
162        mountIframe(host);
163        return;
164      }
165      observer.observe(host);
166    });
167  }
168
169  if (document.readyState === 'loading') {
170    document.addEventListener('DOMContentLoaded', function () { setTimeout(startAdSlots, 1000); });
171  } else {
172    setTimeout(startAdSlots, 1000);
173  }
174})();