#lazysizes noscript/progressive enhancement extension
The noscript extension is the true ultimate progressive enhancement extension for lazySizes. It allows you to transform any HTML inside a noscript
element as soon as it becomes visible.
##Markup
The lazyload
class has to be added to the parent element of the noscript
element and this element has to also have a data-noscript
attribute. As soon as it is near the viewport the content of the noscript
element will replace the content of the ``.lazyload` element.
<div class="lazyload" data-noscript="">
<noscript>
<p>any kind of content you want to be unveiled</p>
</noscript>
</div>
<!-- or -->
<div class="lazyload" data-noscript="">
<noscript>
<picture>
<!--[if IE 9]><video style="display: none;><![endif]-->
<source
srcset="http://placehold.it/500x600/11e87f/fff"
media="(max-width: 480px)" />
<source
srcset="http://placehold.it/700x300"
media="(max-width: 700px)" />
<source
srcset="http://placehold.it/1400x600/e8117f/fff"
media="(max-width: 1400px)" />
<source
srcset="http://placehold.it/1800x900/117fe8/fff" />
<!--[if IE 9]></video><![endif]-->
<img
src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
alt="image with artdirection" />
</picture>
<iframe frameborder="0"
allowfullscreen=""
src="//www.youtube.com/embed/ZfV-aYdU4uE">
</iframe>
</noscript>
</div>
Important note: While you also can transform responsive images with this plugin, neither the data-sizes
nor the customMedia
features do work with the noscript
extension. Also note: Android 2.x is not supported with this plugin.
##Add IE8- support with conditional comments The noscript extension can also be used in conjunction with conditional comments to add progressive enhancement support for IE8-:
<div class="lazyload" data-noscript="">
<!--[if lte IE 8]><noscript><![endif]-->
<p>any kind of content you want to be unveiled</p>
<!--[if lte IE 8]></noscript><![endif]-->
</div>