我正在使用jquery的lazyload和treshold延迟加载此网站上的图像:https://bm-translations.de/#leistungen
//Lazyload Images with Threshold https://www.appelsiini.net/projects/lazyload
$(function() {
$("img.lazy").lazyload({
threshold : 400
});
});
因此,图像 src
被 data-original
替换。当我滚动到该元素时,它应该将其更改为 src
,就像它一样。
但由于某种原因,它在引导 slider 中加载图像太慢(当我单击它或其自动滑动时,某些图像尚未加载),如您所见。如何调整此代码,使其也适用于此?
slider 的一般结构如下: https://www.w3schools.com/bootstrap/bootstrap_carousel.asp
Carousel JS 是:
$('#myCarousel').carousel({
interval: 9000,
});
// handles the carousel buttons
$('[id^=carousel-selector-]').click( function(){
var id_selector = $(this).attr("id");
var id = id_selector.substr(id_selector.length -1);
id = parseInt(id);
$('#myCarousel').carousel(id);
$('[id^=carousel-selector-]').removeClass('selected');
$(this).addClass('selected');
});
// when the carousel slides, auto update
$('#myCarousel').on('slide.bs.carousel', function (e) {
var id = $('.item.active').data('slide-number');
id = parseInt(id)+1;
$('[id^=carousel-selector-]').removeClass('selected');
$('[id=carousel-selector-'+id+']').addClass('selected');
});
我尝试过这个,但后来它不再滑动了:
$('#myCarousel').carousel({
interval: 9000,
scroll: {
onBefore: function( data ) {
var $current = data.items.visible.first(),
visible = data.items.visible,
src = visible.data('src');
visible.attr('src', src);
}
}
});
如何修复它,以便在点击/自动滑动之前延迟加载,或者至少延迟加载带有阈值的整个轮播图像?
最佳答案
我建议您使用“owl.carousel.js”插件。它更好并且具有更多功能。
$('.owl-carousel').owlCarousel({
items:1,
lazyLoad:true,
loop:true,
margin:10,
autoplay:true,
autoplayTimeout:3000,
autoplayHoverPause:true,
});
<link href="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/assets/owl.carousel.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/owl.carousel.js"></script>
<div class="owl-carousel owl-theme">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=1" data-src-retina="https://placehold.it/350x250&text=1-retina" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=2" data-src-retina="https://placehold.it/350x250&text=2-retina" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=3" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=4" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=5" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=6" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=7" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=8" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=9" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=10" alt="">
<img class="owl-lazy" data-src="https://placehold.it/350x250&text=11" alt="">
</div>
关于jquery - 在水平 slider 中延迟加载图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45624365/