yall-js/dist/yall.umd.js

Yet Another Lazy Loader

!function(e,o){"object"==typeof exports&&"undefined"!=typeof module?o(exports):"function"==typeof define&&define.amd?define(["exports"],o):o((e||self).yallJs={})}(this,function(e){function o(e,o){for(const t in o){const n=o[t];e.addEventListener(t,n.listener||n,n.options||void 0)}}const t="IntersectionObserver"in window&&"IntersectionObserverEntry"in window&&"intersectionRatio"in window.IntersectionObserverEntry.prototype,n=/baidu|(?:google|bing|yandex|duckduck)bot/i.test(navigator.userAgent),s=["src","poster"];function r(e,o){for(const t of s)t in e.dataset&&(e.setAttribute(t,e.dataset[t]),e.classList.contains(o)&&e.classList.remove(o))}function i(e,o,t,n){if("VIDEO"==e.nodeName){const t=Array.from(e.querySelectorAll("source"));for(const e of t)r(e,o);e.load()}r(e,o);const s=e.classList;s.contains(t)&&(s.remove(t),s.add(n))}e.yall=function(e){const s=e?.lazyClass||"lazy",r=e?.lazyBackgroundClass||"lazy-bg",c=e?.lazyBackgroundLoaded||"lazy-bg-loaded",a=e?.threshold||200,l=e?.events||{},d=e?.observeChanges||!1,f=e?.observeRootSelector||"body",u=e?.mutationObserverOptions||{childList:!0,subtree:!0},b=`video.${s},.${r}`;let y=Array.from(document.querySelectorAll(b));for(const e of y)o(e,l);if(!0===t&&!1===n){var v=new IntersectionObserver(e=>{for(const o of e)if(o.isIntersecting||o.intersectionRatio){const{target:e}=o;i(e,s,r,c),v.unobserve(e),y=y.filter(o=>o!=e),0===y.length&&!1===d&&v.disconnect()}},{rootMargin:`${a}px 0%`});for(const e of y)v.observe(e);d&&new MutationObserver(()=>{const e=document.querySelectorAll(b);for(const s of e)!1===y.includes(s)&&(y.push(s),o(s,l),!0===t&&!1===n&&v.observe(s))}).observe(document.querySelector(f),u)}else if(n)for(const e of y)i(e,s,r,c)}});
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