Re: Condition to link to javascript code?

[Achim Gratz <Stromeko@Nexgo.DE>]

Am 23.12.2016 um 17:18 schrieb Richard Stallman:
> I don't follow the meaning of that text.  For instance, "rewriting the
> page into the form that is then ultimately displayed..."  Could you
> explain what sort of rewrite you mean?
>
> The JS code I propose would indeed change the page -- but only in a
> single detail, the URL for klipse.js.  That change hardly qualifies
> as "rewriting".  So what "rewriting" is it?

You have to rewrite the DOM the browser sees before rendering the page 
(or at least before it renders the part that loads klipse.js).  Whether 
you replace the complete page or just a single node isn't much of a 
difference conceptually.  The original page would always need to be 
loaded at least partly, then check for the availability of local script 
files, decide on where to load them from, then render the modified page. 
  In order to be responsive, those decisions need to be made as early as 
possible, so it'd be a mistake to render much of the page before getting 
there.  You'd also have to ensure that the browser doesn't prefetch the 
server versions (i.e. because they are visible in the document before 
you get to remove them from the final DOM).


-- 
Achim.

(on the road :-)