Youtube lazy

Youtube lazy

// functions.php
add_filter( 'embed_oembed_html', function ($html, $url, $attr, $post_ID) {
	$youtube_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#';
	if ( preg_match( $youtube_pattern, $url ) ) {
		$html = str_replace( 'src="', 'class="lazy-youtube" src="" data-src="', $html);
	}
	return $html;
}, 11, 4);

//js
function load_youtube () {
		$('.lazy-youtube').each(function() {
			var newsrc = $(this).attr('data-src');
			$(this).attr('src', newsrc );
		});
	}

	$(window).load(function() {
		setTimeout(load_youtube, 3500);
	});