https://cts-builders.com/wp-content/themes/CTSBuildersTheme/js/scrollanim.js?ver=1.0.0

1(function($) {
2
3    /**
4     * Copyright 2012, Digital Fusion
5     * Licensed under the MIT license.
6     * http://teamdf.com/jquery-plugins/license/
7     *
8     * @author Sam Sehnert
9     * @desc A small plugin that checks whether elements are within
10     *     the user visible viewport of a web browser.
11     *     only accounts for vertical position, not horizontal.
12     */
13  
14    $.fn.visible = function(partial) {
15  
16        var $t            = $(this),
17            $w            = $(window),
18            viewTop       = $w.scrollTop(),
19            viewBottom    = viewTop + $w.height(),
20            _top          = $t.offset().top,
21            _bottom       = _top + $t.height(),
22            compareTop    = partial === true ? _bottom : _top,
23            compareBottom = partial === true ? _top : _bottom;
24  
25      return ((compareBottom <= viewBottom) && (compareTop >= viewTop));
26  
27    };
28  
29  })(jQuery);
30  
31  var win = jQuery(window);
32  
33  var allMods = jQuery(".fade-section");
34  
35  allMods.each(function(i, el) {
36    var el = jQuery(el);
37    if (el.visible(true)) {
38      el.addClass("already-visible");
39      if(el.hasClass('body-vid')){
40        var id = el.find('video').attr('id');
41        if(id){
42          var video = document.getElementById(id);
43          video.play();
44        }
45      }
46    }
47  });
48
49  win.on("load", function() {
50    allMods.each(function(i, el) {
51      var el = jQuery(el);
52      if (el.visible(true)) {
53        el.addClass("come-in");
54        if(el.hasClass('body-vid')){
55          var id = el.find('video').attr('id');
56          if(id){
57            var video = document.getElementById(id);
58            video.play();
59          }
60        }
61      }
62    });
63  });
64  
65  win.scroll(function(event) {
66  
67    allMods.each(function(i, el) {
68      var el = jQuery(el);
69      if (el.visible(true)) {
70        el.addClass("come-in");
71        if(el.hasClass('body-vid')){
72          var id = el.find('video').attr('id');
73          if(id){
74            var video = document.getElementById(id);
75            video.play();
76          }
77        }
78      }
79    });
80  
81  });
82