<script src="lazysizes.min.js" async=""></script>

使用示例

<!-- non-responsive: -->

<img data-src="data:image.jpg" class="lazyload" />

<!-- responsive example with automatic sizes calculation: -->

<img

    data-sizes="auto"

    data-src="data:image2.jpg"

    data-srcset="image1.jpg 300w,

    image2.jpg 600w,

    image3.jpg 900w" class="lazyload" />

<!-- iframe example -->

<iframe frameborder="0"

    class="lazyload"

    allowfullscreen=""

    data-src="//www.youtube.com/embed/ZfV-aYdU4uE">

</iframe>