vanilla-lazyload
Version:
A fast, lightweight script to load images as they enter the viewport. SEO friendly, it supports responsive images (both srcset + sizes and picture) and progressive JPEG
89 lines (84 loc) • 2.24 kB
HTML
<html>
<head lang="en">
<meta charset="UTF-8">
<title>
Lazyload tests
</title>
<style>
ul,
li {
list-style-type: none;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="results1" class="results">
<p>Scroll down</p>
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<video class="lazy" autoplay controls width="620" data-src="https://archive.org/download/BigBuckBunny_124/Content/big_buck_bunny_720p_surround.mp4"
poster="https://peach.blender.org/wp-content/uploads/title_anouncement.jpg?x11217">
<source type="video/mp4" data-src="https://archive.org/download/ElephantsDream/ed_1024_512kb.mp4">
<source type="video/ogg" data-src="https://archive.org/download/ElephantsDream/ed_hd.ogv">
<source type="video/avi" data-src="https://archive.org/download/ElephantsDream/ed_hd.avi">
</video>
</div>
<script src="../dist/lazyload.min.js"></script>
<script>
(function () {
function logElementEvent(eventName, element) {
console.log(Date.now(), eventName, element.getAttribute('data-src'));
}
ll = new LazyLoad({
elements_selector: '.lazy',
callback_enter: function (element) {
logElementEvent("ENTERED", element);
},
callback_load: function (element) {
logElementEvent("LOADED", element);
},
callback_set: function (element) {
logElementEvent("SET", element);
},
callback_error: function (element) {
logElementEvent("ERROR", element);
element.src = "https://placeholdit.imgix.net/~text?txtsize=21&txt=Fallback%20image&w=220&h=280";
}
});
}());
</script>
</body>
</html>