Melbourne Web Developer, Website Design & Development » JSON http://blog.koumei.net = fn(n){n xor 0xFFFF004B eq 0x0 ? n : fn(n - 0x1)} Fri, 03 Sep 2010 15:26:54 +0000 http://wordpress.org/?v=2.9 en hourly 1 A Simple Rss2Json Service Released! http://blog.koumei.net/2009/03/20/a-simple-rss2json-service-released/ http://blog.koumei.net/2009/03/20/a-simple-rss2json-service-released/#comments Thu, 19 Mar 2009 14:33:43 +0000 Koumei http://www.koumei.net/?p=264 Now I simply add a Rss2Json service on my blog, it just return the very first post from the target website as JSON and, of course, the target should be RSS format. The reason why I create this interface is because I would like to utilize cool AJAX to obtain the content from my friend’s blog, yet the browser secure prevent me crossing the boundary to other domain. Could it be working using iFrame? Negative. The only approach to cross the border is using JSON.

The definition of my interface is:

Name: Rss2JSon
Interface: http://www.koumei.net/rss2json/
Method: GET
Parameter 1:  rss  – The URL of the rss content
Parameter 2: cb — The javascript callback function
Return: application/x-javascript
Example: http://www.koumei.net/rss2json/?rss=http://www.blogjava.net/max/rss&cb=<callback>  (A blog of my friend)

The callback function is very significant. Don’t forget to define a callback JS function on your script. The definition of the callback function should be similar as below ( parameter rss is an object, containing “title”, “link” and “description” and so forth<please go through RSS schema on item tag>.)

<script type=”text/javascript”> 

function myCallback(rss){
    var title = rss["title"];   // or rss.title
    var link = rss["link"];  // or rss.link
    var desc = rss["description"];  // or rss.description.
}

</script>

Now, you can embed the script to wherever you need.
<script type=”text/javascript” src=”http://www.koumei.net/rss2json/?rss=http://www.blogjava.net/max/rss&cb=myCallback”></script> 

Enjoy scripting.

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