JSON is a very lightweight data format based on a subset of the JavaScript syntax, namely array and object literals. JSON allows communicating with server in a standard way. JSON is used as communication notation instead of XML.

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var oBike =

{

"color" : "Green",

"Speed": 200,

};

alert(oBike.color); //outputs "Green"

alert(oBike.Speed); //outputs 200

The above code creates an javascript object bike with two properties Color and Speed.