https://hodl.market/wp-content/themes/kona/files/js/jquery.unveil.min.js?ver=2.0

1/**
2 * jQuery Unveil
3 * A very lightweight jQuery plugin to lazy load images
4 * http://luis-almeida.github.com/unveil
5 *
6 * Licensed under the MIT license.
7 * Copyright 2013 Luís Almeida
8 * https://github.com/luis-almeida
9 */
10
11;(function($) {
12
13  $.fn.unveil = function(threshold, callback) {
14	
15	
16    var $w = $(window),
17        th = threshold || 0,
18        retina = window.devicePixelRatio > 1,
19        attrib = retina? "data-src-retina" : "data-src",
20        images = this,
21        loaded;
22		
23	// BY SPAB RICE
24	if (!images.parent('.lazy-img').length) {	
25		images.wrap( '<span class="lazy-wrapper"><span class="lazy-img"></span></span>' );
26		images.parents(".lazy-wrapper").append( '<span class="lazy-icon"><span></span></span>' );
27		images.each(function(){
28			var wrapperHeight = 400;
29			if (typeof jQuery(this).attr("height") !== typeof undefined && jQuery(this).attr("height") !== false) {
30				var originalHeight = parseInt(jQuery(this).attr("height"),10);
31				var originalWidth = parseInt(jQuery(this).attr("width"),10);
32				jQuery(this).parents(".lazy-wrapper").css("max-width",originalWidth+"px");
33				if (
34					jQuery(this).closest(".isotope-grid").data("ratio") ||  
35					(jQuery(this).closest(".isotope-grid:not(.gallery-container)") && jQuery(this).closest(".item-media")) )
36					{ jQuery(this).parents(".lazy-wrapper").css("max-width","100%"); }
37					// if closest added for isotope grid with double sized element (always take the full width)
38					// and for all item-media images for no gallery conatiner
39				var iRatio = originalWidth/originalHeight;
40				var wrapperWidth = parseInt(jQuery(this).parents(".lazy-wrapper").width(),10);
41				wrapperHeight = parseInt(wrapperWidth / iRatio,10);
42			}
43			jQuery(this).parents(".lazy-wrapper").css({"min-height": wrapperHeight+"px"});
44		});
45	}
46	// BY SPAB RICE	
47	
48    this.one("unveil", function() {
49	  var source = this.getAttribute(attrib);
50      source = source || this.getAttribute("data-src");
51      if (source) {
52        this.setAttribute("src", source);
53		if (this.getAttribute("data-srcset")) { this.setAttribute("srcset", this.getAttribute("data-srcset")); }
54		if (this.getAttribute("data-sizes")) { this.setAttribute("sizes", this.getAttribute("data-sizes")); }
55		// BY SPAB RICE	
56		jQuery(this).addClass("lazy-loaded");
57		jQuery(this).parents(".lazy-wrapper").addClass("loaded");
58        if (typeof callback === "function") callback.call(this);
59      }
60    });
61
62    function unveil() {
63      var inview = images.filter(function() {
64        var $e = $(this);
65        if ($e.is(":hidden")) return;
66
67        var wt = $w.scrollTop(),
68            wb = wt + $w.height(),
69            et = $e.offset().top,
70            eb = et + $e.height();
71
72        return eb >= wt - th && et <= wb + th;
73      });
74		
75      loaded = inview.trigger("unveil");
76      images = images.not(loaded);
77    }
78
79    $w.on("scroll.unveil resize.unveil lookup.unveil", unveil);
80
81    // add setTimeout to unveil the first visible images after rest has been loaded 
82	// unveil();
83    setTimeout(function(){ unveil(); },1000);
84	  
85    return this;
86
87  };
88
89})(window.jQuery || window.Zepto);