jquery.lazyload.min.js

!function(e,t,i,o){var r=e(t);e.fn.lazyload=function(n){function a(){var t=0;l.each(function(){var i=e(this);if(!d.skip_invisible||i.is(":visible"))if(e.abovethetop(this,d)||e.leftofbegin(this,d));else if(e.belowthefold(this,d)||e.rightoffold(this,d)){if(++t>d.failure_limit)return!1}else i.trigger("appear"),t=0})}var f,l=this,d={threshold:0,failure_limit:0,event:"scroll",effect:"show",container:t,data_attribute:"original",skip_invisible:!1,appear:null,load:null,broken_pic:"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQIW2NkAAIAAAoAAggA9GkAAAAASUVORK5CYII=",placeholder:"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQIW2O8e/fufwAIzgOYrS4BDgAAAABJRU5ErkJggg=="};if(n&&(o!==n.failurelimit&&(n.failure_limit=n.failurelimit,delete n.failurelimit),o!==n.effectspeed&&(n.effect_speed=n.effectspeed,delete n.effectspeed),e.extend(d,n)),!e.isFunction(e.fn.imagesLoaded))throw new Error("This JavaScript requires jQuery ImagesLoaded");return f=d.container===o||d.container===t?r:e(d.container),0===d.event.indexOf("scroll")&&f.bind(d.event,function(){return a()}),this.each(function(){var t=this,i=e(t);t.loaded=!1,(i.attr("src")===o||i.attr("src")===!1)&&i.is("img")&&i.attr("src",d.placeholder),i.one("appear",function(){if(!this.loaded){if(d.appear){var o=l.length;d.appear.call(t,o,d)}e("<img />").on("load",function(){var o=i.attr("data-"+d.data_attribute);i.hide(),i.is("img")?i.attr("src",o):i.css("background-image","url('"+o+"')"),i[d.effect](d.effect_speed),t.loaded=!0;var r=e.grep(l,function(e){return!e.loaded});if(l=e(r),d.load){var n=l.length;d.load.call(t,n,d)}}).attr("src",i.attr("data-"+d.data_attribute)).imagesLoaded(function(){this.hasAnyBroken&&i.attr("src",d.broken_pic)})}}),0!==d.event.indexOf("scroll")&&i.bind(d.event,function(){t.loaded||i.trigger("appear")})}),r.bind("resize",function(){a()}),/(?:iphone|ipod|ipad).*os 5/gi.test(navigator.appVersion)&&r.bind("pageshow",function(t){t.originalEvent&&t.originalEvent.persisted&&l.each(function(){e(this).trigger("appear")})}),e(i).ready(function(){a()}),this},e.belowthefold=function(i,n){var a;return a=n.container===o||n.container===t?(t.innerHeight?t.innerHeight:r.height())+r.scrollTop():e(n.container).offset().top+e(n.container).height(),a<=e(i).offset().top-n.threshold},e.rightoffold=function(i,n){var a;return a=n.container===o||n.container===t?r.width()+r.scrollLeft():e(n.container).offset().left+e(n.container).width(),a<=e(i).offset().left-n.threshold},e.abovethetop=function(i,n){var a;return a=n.container===o||n.container===t?r.scrollTop():e(n.container).offset().top,a>=e(i).offset().top+n.threshold+e(i).height()},e.leftofbegin=function(i,n){var a;return a=n.container===o||n.container===t?r.scrollLeft():e(n.container).offset().left,a>=e(i).offset().left+n.threshold+e(i).width()},e.inviewport=function(t,i){return!(e.rightoffold(t,i)||e.leftofbegin(t,i)||e.belowthefold(t,i)||e.abovethetop(t,i))},e.extend(e.expr[":"],{"below-the-fold":function(t){return e.belowthefold(t,{threshold:0})},"above-the-top":function(t){return!e.belowthefold(t,{threshold:0})},"right-of-screen":function(t){return e.rightoffold(t,{threshold:0})},"left-of-screen":function(t){return!e.rightoffold(t,{threshold:0})},"in-viewport":function(t){return e.inviewport(t,{threshold:0})},"above-the-fold":function(t){return!e.belowthefold(t,{threshold:0})},"right-of-fold":function(t){return e.rightoffold(t,{threshold:0})},"left-of-fold":function(t){return!e.rightoffold(t,{threshold:0})}})}(jQuery,window,document);