[whatwg] Simplified <picture> element draft

[Boris Zbarsky]

On 1/22/14 8:14 PM, Bruno Racineux wrote:
> Meanwhile, is there a way in which all vendors can prevent their
> pre-loaders from preloading (and loading at all for that matter) any <img>
> that has either: An html5 hidden attribute

This is feasible.

> or display:none

This is not really.  The preload scanner has no idea bout styles.

> I think it's safe to say that, for the browser to load assets marked as
> 'display:none;' makes little sense

<script> elements are display:none, note.

So are <link> elements.  Both get preloaded.

And people do in fact depend on display:none images being preloaded on 
the web today.  People paint those images to canvases, unhide them and 
expect them to show immediately, etc.

-Boris