10 lines
2.3 KiB
JavaScript
10 lines
2.3 KiB
JavaScript
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/*! lozad.js - v1.9.0 - 2019-02-09
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* https://github.com/ApoorvSaxena/lozad.js
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* Copyright (c) 2019 Apoorv Saxena; Licensed MIT */
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!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.lozad=e()}(this,function(){"use strict";var g=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var r=arguments[e];for(var o in r)Object.prototype.hasOwnProperty.call(r,o)&&(t[o]=r[o])}return t},n="undefined"!=typeof document&&document.documentMode,l={rootMargin:"0px",threshold:0,load:function(t){if("picture"===t.nodeName.toLowerCase()){var e=document.createElement("img");n&&t.getAttribute("data-iesrc")&&(e.src=t.getAttribute("data-iesrc")),t.getAttribute("data-alt")&&(e.alt=t.getAttribute("data-alt")),t.appendChild(e)}if("video"===t.nodeName.toLowerCase()&&!t.getAttribute("data-src")&&t.children){for(var r=t.children,o=void 0,a=0;a<=r.length-1;a++)(o=r[a].getAttribute("data-src"))&&(r[a].src=o);t.load()}t.getAttribute("data-src")&&(t.src=t.getAttribute("data-src")),t.getAttribute("data-srcset")&&t.setAttribute("srcset",t.getAttribute("data-srcset")),t.getAttribute("data-background-image")&&(t.style.backgroundImage="url('"+t.getAttribute("data-background-image")+"')"),t.getAttribute("data-toggle-class")&&t.classList.toggle(t.getAttribute("data-toggle-class"))},loaded:function(){}};
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/**
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* Detect IE browser
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* @const {boolean}
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* @private
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*/function f(t){t.setAttribute("data-loaded",!0)}var b=function(t){return"true"===t.getAttribute("data-loaded")};return function(){var r,o,a=0<arguments.length&&void 0!==arguments[0]?arguments[0]:".lozad",t=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{},e=g({},l,t),n=e.root,i=e.rootMargin,d=e.threshold,c=e.load,u=e.loaded,s=void 0;return window.IntersectionObserver&&(s=new IntersectionObserver((r=c,o=u,function(t,e){t.forEach(function(t){(0<t.intersectionRatio||t.isIntersecting)&&(e.unobserve(t.target),b(t.target)||(r(t.target),f(t.target),o(t.target)))})}),{root:n,rootMargin:i,threshold:d})),{observe:function(){for(var t=function(t){var e=1<arguments.length&&void 0!==arguments[1]?arguments[1]:document;return t instanceof Element?[t]:t instanceof NodeList?t:e.querySelectorAll(t)}(a,n),e=0;e<t.length;e++)b(t[e])||(s?s.observe(t[e]):(c(t[e]),f(t[e]),u(t[e])))},triggerLoad:function(t){b(t)||(c(t),f(t),u(t))},observer:s}}});
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