[whatwg] The <pic> element

[Simon Pieters]

On Mon, 04 Jun 2012 09:58:52 +0200, Kornel Lesiński <kornel at geekhood.net>  
wrote:

> Since it's impossible to introduce void element at this point

It's not impossible, but we generally try to only do it when there's a  
container (like <video>) so it gets popped off the stack soon enough to  
not break the whole page in old browsers.

However, when we *want* fallback, we *should* use a non-void element,  
because using the content as fallback is better than using an attribute as  
fallback:

* It actually gets rendered in old browsers instead of getting ignored.
* It supports rich markup (which enables e.g. tagging multiple languages,  
bidi, ruby, etc).

<canvas> was originally implemented as a void element in Safari, but was  
specced as as non-void element for the above reasons.

-- 
Simon Pieters
Opera Software