javascript-json

json-basics

/*
http://jsfiddle.net/mbhatamb/F9rGz/
Standardized and defined by Douglas Crockford (www.json.org),

Advandates
- lightweight
- fast 
- readable
- natural to javascript object
where as XML is verbose. Douglas says, any dumb can create a better format than XML.
Other disadv - xml processing is very time consuming, lot of overhead.

Note : JSON.stringify() and JSON.parse() methods. JSON is supported by all Major browsers except IE7.
*/
//e.g of a object literal object
/*
Below is a javascript object in literal notation
*/
var rss = {
    channel: {
        version: "2.0",
        description: "sample rss feed",
        title: " my sample title",
        items: [
            {
            link: "http://mysample.com",
            itemdesc: "sample item desc",
            price: 20},
        {
            link: "http://mysample2.com",
            itemdesc: "item2 sample desc",
            price: 50}
        ]
    }
}

console.log(rss.channel.version);
console.log(rss.channel.items[1].link);
console.log(rss.channel.items[1].price);

//JSON Demo
var myjsonstr = JSON.stringify(rss);
//typically you will get the myjsonstr from a AJAX call to Server
console.log("JSON String is" + myjsonstr);
var myrssobj = JSON.parse(myjsonstr);
console.log(myrssobj.channel.version);