[whatwg] drawImage with non-existent images

[Anne van Kesteren]

On Mon, 18 Feb 2008 03:24:45 +0100, Jeff Walden <jwalden+whatwg at MIT.EDU>  
wrote:
>> If the image argument is an HTMLImageElement object whose complete  
>> attribute is false, then the implementation must raise an  
>> INVALID_STATE_ERR exception.
>
> This is all well and good in the case where the image being drawn has  
> the same origin as the document where the canvas resides, but if the two  
> have different origins, this makes it possible to determine the  
> existence of an image on a foreign server.

This is already possible using the error and load events and the complete  
attribute on <img>. There's no new risk here.


-- 
Anne van Kesteren
<http://annevankesteren.nl/>
<http://www.opera.com/>