feat(frontend): replace lazy loading with zibll lazysizes
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@@ -0,0 +1,870 @@
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//lazySizes
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(function (window, factory) {
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var lazySizes = factory(window, window.document, Date);
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window.lazySizes = lazySizes;
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if (typeof module == 'object' && module.exports) {
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module.exports = lazySizes;
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}
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})(typeof window != 'undefined' ? window : {}, function l(window, document, Date) {
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// Pass in the windoe Date function also for SSR because the Date class can be lost
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'use strict';
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/*jshint eqnull:true */
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var lazysizes, lazySizesCfg;
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(function () {
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var prop;
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var lazySizesDefaults = {
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lazyClass: 'lazyload',
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loadedClass: 'lazyloaded',
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loadingClass: 'lazyloading',
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preloadClass: 'lazypreload',
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loadafterClass: 'lazyloadafter',
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errorClass: 'lazyerror',
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//strictClass: 'lazystrict',
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autosizesClass: 'lazyautosizes',
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srcAttr: 'data-src',
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srcsetAttr: 'data-srcset',
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sizesAttr: 'data-sizes',
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//preloadAfterLoad: false,
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minSize: 40,
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customMedia: {},
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init: true,
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expFactor: 1.5,
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hFac: 0.8,
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loadMode: 2,
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loadHidden: true,
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ricTimeout: 0,
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throttleDelay: 125,
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};
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lazySizesCfg = window.lazySizesConfig || window.lazysizesConfig || {};
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for (prop in lazySizesDefaults) {
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if (!(prop in lazySizesCfg)) {
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lazySizesCfg[prop] = lazySizesDefaults[prop];
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}
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}
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})();
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if (!document || !document.getElementsByClassName) {
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return {
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init: function () {},
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cfg: lazySizesCfg,
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noSupport: true,
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};
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}
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var docElem = document.documentElement;
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var supportPicture = window.HTMLPictureElement;
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var _addEventListener = 'addEventListener';
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var _getAttribute = 'getAttribute';
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/**
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* Update to bind to window because 'this' becomes null during SSR
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* builds.
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*/
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var addEventListener = window[_addEventListener].bind(window);
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var setTimeout = window.setTimeout;
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var requestAnimationFrame = window.requestAnimationFrame || setTimeout;
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var requestIdleCallback = window.requestIdleCallback;
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var regPicture = /^picture$/i;
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var loadEvents = ['load', 'error', 'lazyincluded', '_lazyloaded'];
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var regClassCache = {};
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var forEach = Array.prototype.forEach;
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var hasClass = function (ele, cls) {
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if (!regClassCache[cls]) {
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regClassCache[cls] = new RegExp('(\\s|^)' + cls + '(\\s|$)');
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}
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return regClassCache[cls].test(ele[_getAttribute]('class') || '') && regClassCache[cls];
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};
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var addClass = function (ele, cls) {
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if (!hasClass(ele, cls)) {
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ele.setAttribute('class', (ele[_getAttribute]('class') || '').trim() + ' ' + cls);
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}
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};
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var removeClass = function (ele, cls) {
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var reg;
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if ((reg = hasClass(ele, cls))) {
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ele.setAttribute('class', (ele[_getAttribute]('class') || '').replace(reg, ' '));
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}
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};
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var addRemoveLoadEvents = function (dom, fn, add) {
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var action = add ? _addEventListener : 'removeEventListener';
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if (add) {
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addRemoveLoadEvents(dom, fn);
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}
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loadEvents.forEach(function (evt) {
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dom[action](evt, fn);
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});
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};
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var triggerEvent = function (elem, name, detail, noBubbles, noCancelable) {
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var event = document.createEvent('Event');
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if (!detail) {
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detail = {};
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}
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detail.instance = lazysizes;
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event.initEvent(name, !noBubbles, !noCancelable);
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event.detail = detail;
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elem.dispatchEvent(event);
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return event;
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};
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var updatePolyfill = function (el, full) {
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var polyfill;
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if (!supportPicture && (polyfill = window.picturefill || lazySizesCfg.pf)) {
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if (full && full.src && !el[_getAttribute]('srcset')) {
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el.setAttribute('srcset', full.src);
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}
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polyfill({ reevaluate: true, elements: [el] });
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} else if (full && full.src) {
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el.src = full.src;
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}
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};
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var getCSS = function (elem, style) {
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return (getComputedStyle(elem, null) || {})[style];
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};
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var getWidth = function (elem, parent, width) {
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width = width || elem.offsetWidth;
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while (width < lazySizesCfg.minSize && parent && !elem._lazysizesWidth) {
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width = parent.offsetWidth;
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parent = parent.parentNode;
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}
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return width;
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};
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var rAF = (function () {
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var running, waiting;
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var firstFns = [];
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var secondFns = [];
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var fns = firstFns;
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var run = function () {
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var runFns = fns;
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fns = firstFns.length ? secondFns : firstFns;
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running = true;
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waiting = false;
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while (runFns.length) {
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runFns.shift()();
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}
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running = false;
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};
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var rafBatch = function (fn, queue) {
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if (running && !queue) {
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fn.apply(this, arguments);
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} else {
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fns.push(fn);
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if (!waiting) {
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waiting = true;
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(document.hidden ? setTimeout : requestAnimationFrame)(run);
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}
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}
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};
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rafBatch._lsFlush = run;
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return rafBatch;
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})();
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var rAFIt = function (fn, simple) {
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return simple
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? function () {
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rAF(fn);
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}
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: function () {
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var that = this;
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var args = arguments;
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rAF(function () {
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fn.apply(that, args);
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});
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};
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};
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var throttle = function (fn) {
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var running;
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var lastTime = 0;
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var gDelay = lazySizesCfg.throttleDelay;
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var rICTimeout = lazySizesCfg.ricTimeout;
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var run = function () {
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running = false;
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lastTime = Date.now();
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fn();
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};
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var idleCallback =
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requestIdleCallback && rICTimeout > 49
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? function () {
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requestIdleCallback(run, { timeout: rICTimeout });
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if (rICTimeout !== lazySizesCfg.ricTimeout) {
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rICTimeout = lazySizesCfg.ricTimeout;
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}
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}
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: rAFIt(function () {
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setTimeout(run);
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}, true);
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return function (isPriority) {
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var delay;
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if ((isPriority = isPriority === true)) {
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rICTimeout = 33;
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}
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if (running) {
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return;
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}
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running = true;
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delay = gDelay - (Date.now() - lastTime);
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if (delay < 0) {
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delay = 0;
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}
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if (isPriority || delay < 9) {
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idleCallback();
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} else {
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setTimeout(idleCallback, delay);
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}
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};
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};
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//based on http://modernjavascript.blogspot.de/2013/08/building-better-debounce.html
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var debounce = function (func) {
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var timeout, timestamp;
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var wait = 99;
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var run = function () {
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timeout = null;
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func();
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};
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var later = function () {
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var last = Date.now() - timestamp;
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if (last < wait) {
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setTimeout(later, wait - last);
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} else {
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(requestIdleCallback || run)(run);
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}
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};
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return function () {
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timestamp = Date.now();
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if (!timeout) {
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timeout = setTimeout(later, wait);
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}
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};
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};
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var loader = (function () {
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var preloadElems, isCompleted, resetPreloadingTimer, loadMode, started;
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var eLvW, elvH, eLtop, eLleft, eLright, eLbottom, isBodyHidden;
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var regImg = /^img$/i;
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var regIframe = /^iframe$/i;
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var supportScroll = 'onscroll' in window && !/(gle|ing)bot/.test(navigator.userAgent);
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var shrinkExpand = 0;
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var currentExpand = 0;
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var isLoading = 0;
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var lowRuns = -1;
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var resetPreloading = function (e) {
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isLoading--;
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if (!e || isLoading < 0 || !e.target) {
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isLoading = 0;
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}
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};
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var isVisible = function (elem) {
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if (isBodyHidden == null) {
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isBodyHidden = getCSS(document.body, 'visibility') == 'hidden';
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}
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return isBodyHidden || !(getCSS(elem.parentNode, 'visibility') == 'hidden' && getCSS(elem, 'visibility') == 'hidden');
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};
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var isNestedVisible = function (elem, elemExpand) {
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var outerRect;
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var parent = elem;
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var visible = isVisible(elem);
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eLtop -= elemExpand;
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eLbottom += elemExpand;
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eLleft -= elemExpand;
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eLright += elemExpand;
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while (visible && (parent = parent.offsetParent) && parent != document.body && parent != docElem) {
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visible = (getCSS(parent, 'opacity') || 1) > 0;
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if (visible && getCSS(parent, 'overflow') != 'visible') {
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outerRect = parent.getBoundingClientRect();
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visible = eLright > outerRect.left && eLleft < outerRect.right && eLbottom > outerRect.top - 1 && eLtop < outerRect.bottom + 1;
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}
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}
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return visible;
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};
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var checkElements = function () {
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var eLlen, i, rect, autoLoadElem, loadedSomething, elemExpand, elemNegativeExpand, elemExpandVal, beforeExpandVal, defaultExpand, preloadExpand, hFac;
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var lazyloadElems = lazysizes.elements;
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if ((loadMode = lazySizesCfg.loadMode) && isLoading < 8 && (eLlen = lazyloadElems.length)) {
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i = 0;
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lowRuns++;
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for (; i < eLlen; i++) {
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if (!lazyloadElems[i] || lazyloadElems[i]._lazyRace) {
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continue;
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}
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if (!supportScroll || (lazysizes.prematureUnveil && lazysizes.prematureUnveil(lazyloadElems[i]))) {
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unveilElement(lazyloadElems[i]);
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continue;
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}
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if (!(elemExpandVal = lazyloadElems[i][_getAttribute]('data-expand')) || !(elemExpand = elemExpandVal * 1)) {
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elemExpand = currentExpand;
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}
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if (!defaultExpand) {
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defaultExpand = !lazySizesCfg.expand || lazySizesCfg.expand < 1 ? (docElem.clientHeight > 500 && docElem.clientWidth > 500 ? 500 : 370) : lazySizesCfg.expand;
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lazysizes._defEx = defaultExpand;
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preloadExpand = defaultExpand * lazySizesCfg.expFactor;
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hFac = lazySizesCfg.hFac;
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isBodyHidden = null;
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if (currentExpand < preloadExpand && isLoading < 1 && lowRuns > 2 && loadMode > 2 && !document.hidden) {
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currentExpand = preloadExpand;
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lowRuns = 0;
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} else if (loadMode > 1 && lowRuns > 1 && isLoading < 6) {
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currentExpand = defaultExpand;
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} else {
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currentExpand = shrinkExpand;
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}
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}
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if (beforeExpandVal !== elemExpand) {
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eLvW = innerWidth + elemExpand * hFac;
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elvH = innerHeight + elemExpand;
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elemNegativeExpand = elemExpand * -1;
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beforeExpandVal = elemExpand;
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}
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rect = lazyloadElems[i].getBoundingClientRect();
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if ((eLbottom = rect.bottom) >= elemNegativeExpand && (eLtop = rect.top) <= elvH && (eLright = rect.right) >= elemNegativeExpand * hFac && (eLleft = rect.left) <= eLvW && (eLbottom || eLright || eLleft || eLtop) && (lazySizesCfg.loadHidden || isVisible(lazyloadElems[i])) && ((isCompleted && isLoading < 3 && !elemExpandVal && (loadMode < 3 || lowRuns < 4)) || isNestedVisible(lazyloadElems[i], elemExpand))) {
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unveilElement(lazyloadElems[i]);
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loadedSomething = true;
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if (isLoading > 9) {
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break;
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}
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} else if (!loadedSomething && isCompleted && !autoLoadElem && isLoading < 4 && lowRuns < 4 && loadMode > 2 && (preloadElems[0] || lazySizesCfg.preloadAfterLoad) && (preloadElems[0] || (!elemExpandVal && (eLbottom || eLright || eLleft || eLtop || lazyloadElems[i][_getAttribute](lazySizesCfg.sizesAttr) != 'auto')))) {
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autoLoadElem = preloadElems[0] || lazyloadElems[i];
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}
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}
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if (autoLoadElem && !loadedSomething) {
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unveilElement(autoLoadElem);
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}
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}
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};
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var throttledCheckElements = throttle(checkElements);
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var switchLoadingClass = function (e) {
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var elem = e.target;
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if (elem._lazyCache) {
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delete elem._lazyCache;
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return;
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}
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resetPreloading(e);
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addClass(elem, lazySizesCfg.loadedClass);
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removeClass(elem, lazySizesCfg.loadingClass);
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addRemoveLoadEvents(elem, rafSwitchLoadingClass);
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triggerEvent(elem, 'lazyloaded');
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//添加loadafterClass，防止后期二次触发动画
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setTimeout(function () {
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addClass(elem, lazySizesCfg.loadafterClass);
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}, 700);
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};
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var rafedSwitchLoadingClass = rAFIt(switchLoadingClass);
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var rafSwitchLoadingClass = function (e) {
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rafedSwitchLoadingClass({ target: e.target });
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};
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var changeIframeSrc = function (elem, src) {
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try {
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elem.contentWindow.location.replace(src);
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} catch (e) {
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elem.src = src;
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}
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};
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var handleSources = function (source) {
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var customMedia;
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var sourceSrcset = source[_getAttribute](lazySizesCfg.srcsetAttr);
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if ((customMedia = lazySizesCfg.customMedia[source[_getAttribute]('data-media') || source[_getAttribute]('media')])) {
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source.setAttribute('media', customMedia);
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}
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if (sourceSrcset) {
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source.setAttribute('srcset', sourceSrcset);
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}
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};
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var lazyUnveil = rAFIt(function (elem, detail, isAuto, sizes, isImg) {
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var src, srcset, parent, isPicture, event, firesLoad;
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if (!(event = triggerEvent(elem, 'lazybeforeunveil', detail)).defaultPrevented) {
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if (sizes) {
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if (isAuto) {
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addClass(elem, lazySizesCfg.autosizesClass);
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} else {
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elem.setAttribute('sizes', sizes);
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}
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}
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srcset = elem[_getAttribute](lazySizesCfg.srcsetAttr);
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src = elem[_getAttribute](lazySizesCfg.srcAttr);
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if (isImg) {
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parent = elem.parentNode;
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isPicture = parent && regPicture.test(parent.nodeName || '');
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}
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firesLoad = detail.firesLoad || ('src' in elem && (srcset || src || isPicture));
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event = { target: elem };
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addClass(elem, lazySizesCfg.loadingClass);
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if (firesLoad) {
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clearTimeout(resetPreloadingTimer);
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resetPreloadingTimer = setTimeout(resetPreloading, 2500);
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addRemoveLoadEvents(elem, rafSwitchLoadingClass, true);
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}
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if (isPicture) {
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forEach.call(parent.getElementsByTagName('source'), handleSources);
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}
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if (srcset) {
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elem.setAttribute('srcset', srcset);
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} else if (src && !isPicture) {
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if (regIframe.test(elem.nodeName)) {
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changeIframeSrc(elem, src);
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} else {
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elem.src = src;
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}
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}
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if (isImg && (srcset || isPicture)) {
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updatePolyfill(elem, { src: src });
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}
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}
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if (elem._lazyRace) {
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delete elem._lazyRace;
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}
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removeClass(elem, lazySizesCfg.lazyClass);
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rAF(function () {
|
||||
// Part of this can be removed as soon as this fix is older: https://bugs.chromium.org/p/chromium/issues/detail?id=7731 (2015)
|
||||
var isLoaded = elem.complete && elem.naturalWidth > 1;
|
||||
|
||||
if (!firesLoad || isLoaded) {
|
||||
if (isLoaded) {
|
||||
addClass(elem, 'ls-is-cached');
|
||||
}
|
||||
switchLoadingClass(event);
|
||||
elem._lazyCache = true;
|
||||
setTimeout(function () {
|
||||
if ('_lazyCache' in elem) {
|
||||
delete elem._lazyCache;
|
||||
}
|
||||
}, 9);
|
||||
}
|
||||
if (elem.loading == 'lazy') {
|
||||
isLoading--;
|
||||
}
|
||||
}, true);
|
||||
});
|
||||
|
||||
var unveilElement = function (elem) {
|
||||
if (elem._lazyRace) {
|
||||
return;
|
||||
}
|
||||
var detail;
|
||||
|
||||
var isImg = regImg.test(elem.nodeName);
|
||||
|
||||
//allow using sizes="auto", but don't use. it's invalid. Use data-sizes="auto" or a valid value for sizes instead (i.e.: sizes="80vw")
|
||||
var sizes = isImg && (elem[_getAttribute](lazySizesCfg.sizesAttr) || elem[_getAttribute]('sizes'));
|
||||
var isAuto = sizes == 'auto';
|
||||
|
||||
if ((isAuto || !isCompleted) && isImg && (elem[_getAttribute]('src') || elem.srcset) && !elem.complete && !hasClass(elem, lazySizesCfg.errorClass) && hasClass(elem, lazySizesCfg.lazyClass)) {
|
||||
return;
|
||||
}
|
||||
|
||||
detail = triggerEvent(elem, 'lazyunveilread').detail;
|
||||
|
||||
if (isAuto) {
|
||||
autoSizer.updateElem(elem, true, elem.offsetWidth);
|
||||
}
|
||||
|
||||
elem._lazyRace = true;
|
||||
isLoading++;
|
||||
|
||||
lazyUnveil(elem, detail, isAuto, sizes, isImg);
|
||||
};
|
||||
|
||||
var afterScroll = debounce(function () {
|
||||
lazySizesCfg.loadMode = 3;
|
||||
throttledCheckElements();
|
||||
});
|
||||
|
||||
var altLoadmodeScrollListner = function () {
|
||||
if (lazySizesCfg.loadMode == 3) {
|
||||
lazySizesCfg.loadMode = 2;
|
||||
}
|
||||
afterScroll();
|
||||
};
|
||||
|
||||
var onload = function () {
|
||||
if (isCompleted) {
|
||||
return;
|
||||
}
|
||||
if (Date.now() - started < 999) {
|
||||
setTimeout(onload, 999);
|
||||
return;
|
||||
}
|
||||
|
||||
isCompleted = true;
|
||||
|
||||
lazySizesCfg.loadMode = 3;
|
||||
|
||||
throttledCheckElements();
|
||||
|
||||
addEventListener('scroll', altLoadmodeScrollListner, true);
|
||||
};
|
||||
|
||||
return {
|
||||
_: function () {
|
||||
started = Date.now();
|
||||
|
||||
lazysizes.elements = document.getElementsByClassName(lazySizesCfg.lazyClass);
|
||||
preloadElems = document.getElementsByClassName(lazySizesCfg.lazyClass + ' ' + lazySizesCfg.preloadClass);
|
||||
|
||||
addEventListener('scroll', throttledCheckElements, true);
|
||||
|
||||
addEventListener('resize', throttledCheckElements, true);
|
||||
|
||||
addEventListener('pageshow', function (e) {
|
||||
if (e.persisted) {
|
||||
var loadingElements = document.querySelectorAll('.' + lazySizesCfg.loadingClass);
|
||||
|
||||
if (loadingElements.length && loadingElements.forEach) {
|
||||
requestAnimationFrame(function () {
|
||||
loadingElements.forEach(function (img) {
|
||||
if (img.complete) {
|
||||
unveilElement(img);
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
if (window.MutationObserver) {
|
||||
new MutationObserver(throttledCheckElements).observe(docElem, { childList: true, subtree: true, attributes: true });
|
||||
} else {
|
||||
docElem[_addEventListener]('DOMNodeInserted', throttledCheckElements, true);
|
||||
docElem[_addEventListener]('DOMAttrModified', throttledCheckElements, true);
|
||||
setInterval(throttledCheckElements, 999);
|
||||
}
|
||||
|
||||
addEventListener('hashchange', throttledCheckElements, true);
|
||||
|
||||
//, 'fullscreenchange'
|
||||
['focus', 'mouseover', 'click', 'load', 'transitionend', 'animationend'].forEach(function (name) {
|
||||
document[_addEventListener](name, throttledCheckElements, true);
|
||||
});
|
||||
|
||||
if (/d$|^c/.test(document.readyState)) {
|
||||
onload();
|
||||
} else {
|
||||
addEventListener('load', onload);
|
||||
document[_addEventListener]('DOMContentLoaded', throttledCheckElements);
|
||||
setTimeout(onload, 20000);
|
||||
}
|
||||
|
||||
if (lazysizes.elements.length) {
|
||||
checkElements();
|
||||
rAF._lsFlush();
|
||||
} else {
|
||||
throttledCheckElements();
|
||||
}
|
||||
},
|
||||
checkElems: throttledCheckElements,
|
||||
unveil: unveilElement,
|
||||
_aLSL: altLoadmodeScrollListner,
|
||||
};
|
||||
})();
|
||||
|
||||
var autoSizer = (function () {
|
||||
var autosizesElems;
|
||||
|
||||
var sizeElement = rAFIt(function (elem, parent, event, width) {
|
||||
var sources, i, len;
|
||||
elem._lazysizesWidth = width;
|
||||
width += 'px';
|
||||
|
||||
elem.setAttribute('sizes', width);
|
||||
|
||||
if (regPicture.test(parent.nodeName || '')) {
|
||||
sources = parent.getElementsByTagName('source');
|
||||
for (i = 0, len = sources.length; i < len; i++) {
|
||||
sources[i].setAttribute('sizes', width);
|
||||
}
|
||||
}
|
||||
|
||||
if (!event.detail.dataAttr) {
|
||||
updatePolyfill(elem, event.detail);
|
||||
}
|
||||
});
|
||||
var getSizeElement = function (elem, dataAttr, width) {
|
||||
var event;
|
||||
var parent = elem.parentNode;
|
||||
|
||||
if (parent) {
|
||||
width = getWidth(elem, parent, width);
|
||||
event = triggerEvent(elem, 'lazybeforesizes', { width: width, dataAttr: !!dataAttr });
|
||||
|
||||
if (!event.defaultPrevented) {
|
||||
width = event.detail.width;
|
||||
|
||||
if (width && width !== elem._lazysizesWidth) {
|
||||
sizeElement(elem, parent, event, width);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
var updateElementsSizes = function () {
|
||||
var i;
|
||||
var len = autosizesElems.length;
|
||||
if (len) {
|
||||
i = 0;
|
||||
|
||||
for (; i < len; i++) {
|
||||
getSizeElement(autosizesElems[i]);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
var debouncedUpdateElementsSizes = debounce(updateElementsSizes);
|
||||
|
||||
return {
|
||||
_: function () {
|
||||
autosizesElems = document.getElementsByClassName(lazySizesCfg.autosizesClass);
|
||||
addEventListener('resize', debouncedUpdateElementsSizes);
|
||||
},
|
||||
checkElems: debouncedUpdateElementsSizes,
|
||||
updateElem: getSizeElement,
|
||||
};
|
||||
})();
|
||||
|
||||
var init = function () {
|
||||
if (!init.i && document.getElementsByClassName) {
|
||||
init.i = true;
|
||||
autoSizer._();
|
||||
loader._();
|
||||
}
|
||||
};
|
||||
|
||||
setTimeout(function () {
|
||||
if (lazySizesCfg.init) {
|
||||
init();
|
||||
}
|
||||
});
|
||||
|
||||
lazysizes = {
|
||||
cfg: lazySizesCfg,
|
||||
autoSizer: autoSizer,
|
||||
loader: loader,
|
||||
init: init,
|
||||
uP: updatePolyfill,
|
||||
aC: addClass,
|
||||
rC: removeClass,
|
||||
hC: hasClass,
|
||||
fire: triggerEvent,
|
||||
gW: getWidth,
|
||||
rAF: rAF,
|
||||
};
|
||||
|
||||
return lazysizes;
|
||||
});
|
||||
|
||||
|
||||
/**
|
||||
* AKSRT integration for Zibll's lazySizes runtime.
|
||||
* Normalizes dynamic markup without creating a second media loader.
|
||||
*/
|
||||
(function (window, document) {
|
||||
'use strict';
|
||||
|
||||
function normalize(root) {
|
||||
var scope = root && root.querySelectorAll ? root : document;
|
||||
scope.querySelectorAll('img,iframe,video,[data-bg],[lazyload-action]').forEach(function (element) {
|
||||
var hasLazySource = element.hasAttribute('data-src') || element.hasAttribute('data-srcset');
|
||||
if (element.tagName === 'VIDEO' && element.querySelector('source[data-src],source[data-srcset]')) {
|
||||
hasLazySource = true;
|
||||
}
|
||||
if ((hasLazySource || element.hasAttribute('data-bg') || element.hasAttribute('lazyload-action')) &&
|
||||
!element.classList.contains('lazyloaded') && !element.classList.contains('lazyloading')) {
|
||||
element.classList.add('lazyload');
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function escapeAttribute(value) {
|
||||
return String(value == null ? '' : value)
|
||||
.replace(/&/g, '&')
|
||||
.replace(/"/g, '"')
|
||||
.replace(/</g, '<')
|
||||
.replace(/>/g, '>');
|
||||
}
|
||||
|
||||
window.aksrtGetLazyImageAttr = function (key, src, className, size) {
|
||||
var config = window.aksrtData || {};
|
||||
var scopes = config.lazyScopes || {};
|
||||
var classes = String(className || '').trim();
|
||||
var realSrc = escapeAttribute(src);
|
||||
if (!src || scopes[key] === false) {
|
||||
return ' class="' + escapeAttribute(classes) + '" src="' + realSrc + '"';
|
||||
}
|
||||
var thumbs = config.lazyThumbs || {};
|
||||
var placeholder = key === 'lazy_avatar'
|
||||
? (config.lazyAvatar || thumbs.sm || '')
|
||||
: (thumbs[size || 'default'] || thumbs.default || '');
|
||||
return ' class="lazyload ' + escapeAttribute(classes) + '" src="' + escapeAttribute(placeholder) + '" data-src="' + realSrc + '"';
|
||||
};
|
||||
|
||||
document.addEventListener('lazybeforeunveil', function (event) {
|
||||
var element = event.target;
|
||||
var action = element.getAttribute('lazyload-action');
|
||||
|
||||
window.setTimeout(function () {
|
||||
if (action === 'ias') {
|
||||
if (element.hasAttribute('remote-box')) {
|
||||
element.click();
|
||||
} else {
|
||||
var trigger = element.matches('.ajax-next,.ias-btn')
|
||||
? element
|
||||
: element.querySelector('.ajax-next,.ias-btn');
|
||||
if (trigger) {
|
||||
trigger.setAttribute('no-scroll', 'true');
|
||||
trigger.dataset.lazyAuto = '1';
|
||||
trigger.click();
|
||||
}
|
||||
}
|
||||
} else if (action === 'animated') {
|
||||
var animation = element.getAttribute('data-animated');
|
||||
if (animation) {
|
||||
element.classList.add('animated', animation);
|
||||
element.style.visibility = '';
|
||||
}
|
||||
}
|
||||
}, 200);
|
||||
|
||||
var background = element.getAttribute('data-bg');
|
||||
if (background) {
|
||||
element.style.backgroundImage = 'url("' + background.replace(/"/g, '\\"') + '")';
|
||||
}
|
||||
|
||||
if (element.tagName === 'VIDEO') {
|
||||
var changed = false;
|
||||
var poster = element.getAttribute('data-poster');
|
||||
if (poster) {
|
||||
element.setAttribute('poster', poster);
|
||||
}
|
||||
element.querySelectorAll('source[data-src],source[data-srcset]').forEach(function (source) {
|
||||
var src = source.getAttribute('data-src');
|
||||
var srcset = source.getAttribute('data-srcset');
|
||||
if (src) {
|
||||
source.setAttribute('src', src);
|
||||
changed = true;
|
||||
}
|
||||
if (srcset) {
|
||||
source.setAttribute('srcset', srcset);
|
||||
changed = true;
|
||||
}
|
||||
});
|
||||
if (changed) {
|
||||
event.detail.firesLoad = true;
|
||||
element.load();
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
if (document.readyState === 'loading') {
|
||||
document.addEventListener('DOMContentLoaded', function () { normalize(document); });
|
||||
} else {
|
||||
normalize(document);
|
||||
}
|
||||
|
||||
new MutationObserver(function (records) {
|
||||
records.forEach(function (record) {
|
||||
record.addedNodes.forEach(function (node) {
|
||||
if (node.nodeType !== 1) return;
|
||||
normalize(node);
|
||||
});
|
||||
});
|
||||
}).observe(document.documentElement, { childList: true, subtree: true });
|
||||
|
||||
window.aksrtNormalizeLazyMedia = normalize;
|
||||
})(window, document);
|
||||
Reference in new issue
Block a user