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Reading this it doesnât seem to be limited to JSON at all. Its *Javascript" not JSON specific. You could easily pass XML if you wanted as long as it was encoded as a JSON object/value (such as a string). surrounded by a function. But thanks for the link. Now I know why my web developer colleges used this what I called then "JJSON" (JavaScript Wrapped JSON ) format and called it "JSON". My response was "Thatâs not even JSON !!! Whats this JavaScript function doing in the DATA !" When asked why it had to include a Javascript method instead of pure data all I got was hand-waving and finger pointing. Now I know why ! ---------------------------------------- David A. Lee dlee@c... http://www.xmlsh.org -----Original Message----- From: Mike Sokolov [mailto:sokolov@i...] Sent: Wednesday, December 08, 2010 9:21 AM To: Elliotte Rusty Harold Cc: Rob Koberg; Uche Ogbuji; Michael Kay; xml-dev@l... Subject: Re: Cross-domain loading of XML This article gives a pretty good explanation: http://www.ibm.com/developerworks/library/wa-aj-jsonp1/ The gist is that XMLHttpRequest is limited to same-domain urls. However there is a workaround for JSON (they call it JSONP) that uses the ability to load javascript dynamically from another domain. Essentially, it seems you can bypass the cross-domain restriction by this trick: var script = document.createElement('script'); script.setAttribute('src', url); Apparently in this instance url doesn't have to be a url on the same domain. I don't see why this couldn't be used to insert any sort of data at all, but it does rely on javascript. -Mike On 12/08/2010 08:08 AM, Elliotte Rusty Harold wrote: > On Tue, Dec 7, 2010 at 7:15 PM, Rob Koberg<rob@k...> wrote: > > >> First thing: Get the browser builders to allow cross domain loading of >> XML. Without that you might as just bang your head on a post. (even >> with that, you will just be banging your head on a padded post) >> > Just want to double check this. JSON can be loaded cross-domain and > XML can't, right? I.e. I can eval JSON from an arbitrary host in my > browser-based JavaScript and I can't load XML using XmlHTTPRequest > unless it comes from the same host? Or is it more subtle than that? If > so, is there a detailed analysis somewhere of exactly under what > conditions I can load JSON from where and how? > > Googling around I see some blog posts, but no detailed analysis. > > _______________________________________________________________________ XML-DEV is a publicly archived, unmoderated list hosted by OASIS to support XML implementation and development. To minimize spam in the archives, you must subscribe before posting. [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ Or unsubscribe: xml-dev-unsubscribe@l... subscribe: xml-dev-subscribe@l... List archive: http://lists.xml.org/archives/xml-dev/ List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
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