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Re: RE: James Clark: XML versus the Web

  • From: Rob Koberg <rob@koberg.com>
  • To: David Lee <dlee@calldei.com>
  • Date: Wed, 1 Dec 2010 08:17:52 -0800

Re:  RE: James Clark: XML versus the Web
> JSON was invented, not as a "Standard" but as a practical solution to one
> problem, IMHO,  parsing XML in the browser wasn't universally supported.
> But calling "eval()" was.  So why not just send JavaScript (in sheep's
> clothing as "JSON") directly ?

It is not sheep's clothing. It was in JS before it was named JSON.
Another large problem for XML in the browser is the ability to GET XML
from another domain. For XML you need to proxy it through your server
or proxy it through some other service to turn it into JSON. For JSON
you can use XMLHTTP (and use eval where I can see the sheep's clothing
part) or call it with a script element along with a callback (JSONP -
nekid wolf). Why XML has this security restriction placed on it and
JSON/JS does not is kind of strange, but...

I agree with David. XML is fine. It is just not the right choice for
the browser.

Namespaces are fine (and extremely useful!) for dev users and end
users (who usually don't see it). It was my understanding that
namespaces are/were hard for the parser developers. The discussions on
this list commingle the concerns of the parser dev, the xml dev and
the end user so that the real concerns of the parser dev become
adopted as proof for the others.


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