jquery - 猫头鹰懒惰类中的 Gif 加载图像 Owl Carousel LazyLoad？

Question

我想在 owl carousel2 中设置预加载器图像。我已经阅读了文档，但我没有找到任何在 lazyload 插件选项中使用预加载器图像的信息。

这是插件网站:

https://owlcarousel2.github.io/OwlCarousel2/

我的代码:

<div class="single-product owl-carousel owl-theme">
  <a href="https://source.unsplash.com/0utRJ1mZoZg/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/0utRJ1mZoZg/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/aiNU4cA4UzQ/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/aiNU4cA4UzQ/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/295NLwGdrKM/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/295NLwGdrKM/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/NzsTFFB6Ng8/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/NzsTFFB6Ng8/600x600" class="img-fluid owl-lazy" />
  </a>
</div>

$('.single-product').owlCarousel({
 loop : true,
 items : 1,
 nav : false,
 lazyLoad: true,
});

我需要提供预加载器 gif 图像，以获得更好的用户体验。

你能帮帮我吗？ 非常感谢

Answer 1

您可以设置加载程序 gif 的背景图像。此外，我将 OwlCarousel 调用包装在 $(window).load() 中，这样它会在启动之前等待图像加载，同时加载程序会处理任何 Flash Of Unstyled内容(FOUC)

$(window).on('load', function() {
  $('.single-product').owlCarousel({
    autoHeight: true,
    lazyLoad: true,
    items: 1,
    autoplay: true,
    nav: false,
    dots: true,
    loop: true,
  });
});

.owl-carousel {
  height: 300px;
}

.owl-carousel {
  background: url("https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/ajax-loader.gif") no-repeat center center;
}

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.theme.default.min.css">

<div class="single-product owl-carousel owl-theme">
  <a href="https://source.unsplash.com/0utRJ1mZoZg/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/0utRJ1mZoZg/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/aiNU4cA4UzQ/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/aiNU4cA4UzQ/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/295NLwGdrKM/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/295NLwGdrKM/600x600" class="img-fluid owl-lazy" />
  </a>

  <a href="https://source.unsplash.com/NzsTFFB6Ng8/1080x1350" data-fancybox="images">
    <img data-src="https://source.unsplash.com/NzsTFFB6Ng8/600x600" class="img-fluid owl-lazy" />
  </a>
</div>

<script src="https://code.jquery.com/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script>