[OU] Identify/Mask as - differences?

[Hallvord Reiar Michaelsen Steen]

On 18 Dec 2007 at 16:06, rolf-str at privat.utfors.se wrote:

> I've tried a search in the knowledge base at Operas website, and found 
> information that Opera 9 kan Identify as, and Mask as, O/IE/FF. This 
> has to do with whether "opera" can be found or not in the id-string.
> 
> I did not, however, manage to find what differences there are in 
> functionality. I seem to remember from somewhere that identify/mask as 
> also changes what code can be executed, for instance what kinds of 
> javascript.

You are right, but this is a piece of historical information :-)
Opera used to support some IE-stuff only in IE mode (mainly and 
perhaps only the "document.all" property). This became rather 
confusing and made it much harder to test in Opera than we'd like to 
because even when certain webmasters would test with the default "ID 
as IE" setting, the site might remain broken in Opera when the user 
configured it to ID as something else.

So today, what you identify as has absolutely no impact on what 
JavaScript Opera supports.

-- 
Hallvord Reiar Michaelsen Steen  < http://www.hallvord.com/ >

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