62 lines
2.3 KiB
JavaScript
62 lines
2.3 KiB
JavaScript
/*! LazyYT (lazy load Youtube videos plugin) - v0.3.4 - 2014-06-30
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* Usage: <div class="lazyYT" data-youtube-id="laknj093n" ratio="16:9" data-parameters="rel=0">loading...</div>
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* Copyright (c) 2014 Tyler Pearson; Licensed MIT */
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;(function ($) {
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'use strict';
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function setUp($el) {
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var width = $el.data('width'),
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height = $el.data('height'),
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ratio = $el.data('ratio'),
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id = $el.data('youtube-id'),
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aspectRatio = ['16', '9'],
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paddingTop = 0,
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youtubeParameters = $el.data('parameters') || '';
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if (typeof width === 'undefined' || typeof height === 'undefined') {
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height = 0;
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width = '100%';
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aspectRatio = (ratio.split(":")[1] / ratio.split(":")[0]) * 100;
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paddingTop = aspectRatio + '%';
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}
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$el.css({
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'position': 'relative',
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'height': height,
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'width': width,
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'padding-top': paddingTop,
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'background': 'url(//img.youtube.com/vi/' + id + '/hqdefault.jpg) center center no-repeat',
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'cursor': 'pointer',
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'background-size': 'cover'
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})
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.html('<p id="lazyYT-title-' + id + '" class="lazyYT-title"></p><div class="lazyYT-button"></div>')
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.addClass('lazyYT-image-loaded');
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var $el_title = $el.find("p.lazyYT-title"); //get reference to the current container title element
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$.getJSON('https://gdata.youtube.com/feeds/api/videos/' + id + '?v=2&alt=json', function (data) {
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$el_title.text(data.entry.title.$t);
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});
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$el.on('click', function (e) {
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e.preventDefault();
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if (!$el.hasClass('lazyYT-video-loaded') && $el.hasClass('lazyYT-image-loaded')) {
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$el.html('<iframe width="' + width + '" height="' + height + '" src="//www.youtube.com/embed/' + id + '?autoplay=1&' + youtubeParameters + '" style="position:absolute; top:0; left:0; width:100%; height:100%;" frameborder="0" allowfullscreen></iframe>')
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.removeClass('lazyYT-image-loaded')
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.addClass('lazyYT-video-loaded');
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}
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});
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}
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$.fn.lazyYT = function () {
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return this.each(function () {
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var $el = $(this).css('cursor', 'pointer');
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setUp($el);
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});
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};
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}(jQuery));
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