6 lines
2.6 KiB
JavaScript
Executable File
6 lines
2.6 KiB
JavaScript
Executable File
/*
|
|
* Loading attribute polyfill - https://github.com/mfranzke/loading-attribute-polyfill
|
|
* @license Copyright(c) 2019 by Maximilian Franzke
|
|
* Credits for the initial kickstarter / script to @Sora2455, and supported by @diogoterremoto, @dracos and @Flimm - many thanks for that !
|
|
*/
|
|
!function(e,t){"use strict";var r,a,o={rootMargin:"256px 0px",threshold:.01,lazyImage:'img[loading="lazy"]',lazyIframe:'iframe[loading="lazy"]'},n={loading:"loading"in HTMLImageElement.prototype&&"loading"in HTMLIFrameElement.prototype,scrolling:"onscroll"in window};"undefined"!=typeof NodeList&&NodeList.prototype&&!NodeList.prototype.forEach&&(NodeList.prototype.forEach=Array.prototype.forEach),"IntersectionObserver"in window&&(r=new IntersectionObserver(function(e,t){e.forEach(function(e){if(0!==e.intersectionRatio){var r=e.target;t.unobserve(r),c(r)}})},o)),a="requestAnimationFrame"in window?window.requestAnimationFrame:function(e){e()};var i="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7";function c(e){var t,r,a=[];"picture"===e.parentNode.tagName.toLowerCase()&&(t=e.parentNode,(r=t.querySelector("source[data-lazy-remove]"))&&t.removeChild(r),a=Array.prototype.slice.call(e.parentNode.querySelectorAll("source"))),a.push(e),a.forEach(function(e){e.dataset.lazySrcset&&(e.setAttribute("srcset",e.dataset.lazySrcset),delete e.dataset.lazySrcset)}),e.setAttribute("src",e.dataset.lazySrc),delete e.dataset.lazySrc}function d(e){var t=document.createElement("div");for(t.innerHTML=function(e){var t=e.textContent||e.innerHTML;return!n.loading&&n.scrolling&&(void 0===r?t=t.replace(/(?:\r\n|\r|\n|\t| )src=/g,' lazyload="1" src='):("picture"===e.parentNode.tagName.toLowerCase()&&(t='<source srcset="'+i+'" data-lazy-remove="true"></source>'+t),t=t.replace(/(?:\r\n|\r|\n|\t| )srcset=/g," data-lazy-srcset=").replace(/(?:\r\n|\r|\n|\t| )src=/g,' src="'+i+'" data-lazy-src='))),t}(e);t.firstChild;)n.loading||!n.scrolling||void 0===r||!t.firstChild.tagName||"img"!==t.firstChild.tagName.toLowerCase()&&"iframe"!==t.firstChild.tagName.toLowerCase()||r.observe(t.firstChild),e.parentNode.insertBefore(t.firstChild,e);e.parentNode.removeChild(e)}function s(){document.querySelectorAll("noscript."+e).forEach(d),window.matchMedia("print").addListener(function(e){e.matches&&document.querySelectorAll(o.lazyImage+"[data-lazy-src],"+o.lazyIframe+"[data-lazy-src]").forEach(function(e){c(e)})})}/comp|inter/.test(document.readyState)?a(s):"addEventListener"in document?document.addEventListener("DOMContentLoaded",function(){a(s)}):document.attachEvent("onreadystatechange",function(){"complete"===document.readyState&&s()})}("loading-lazy"); |