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;(function () { "use strict"; var observerOptions = { // rootMargin: document.documentElement.clientHeight + 'px' }; var observer = new IntersectionObserver(onIntersection, observerOptions); var loadedMap = new WeakMap(); var slice = BX.Landing.Utils.slice; var onCustomEvent = BX.Landing.Utils.onCustomEvent; var bgHideStyleString = "[style*='background-image:']{background-image: none !important;}"; onCustomEvent("BX.Landing.Block:init", function (event) { observer.observe(event.block); }); /** * @param {IntersectionObserverEntry[]} entries */ function onIntersection(entries) { entries.forEach(function (entry) { if (entry.isIntersecting && !loadedMap.has(entry.target)) { loadedMap.set(entry.target, true); // load <img> var observableImgs = slice(entry.target.querySelectorAll('[data-lazy-src]')); observableImgs.forEach(function(img) { var src = BX.data(img, 'lazy-src'); BX.adjust(img, { attrs: { 'src': src, 'data-lazy-src': "" } }); }); //load bg var firstChild = entry.target.firstElementChild; if( firstChild.tagName == 'STYLE' && firstChild.innerText.indexOf(bgHideStyleString) !== 0 ) { BX.remove(firstChild); } } }); } })();
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