How to use json? why it used?

Hi All,

I want to know why json format is used?
I want to use it to update a textfield of the rhtml page using
dojo.xhrGet.

Regards,

Salil G.

On 30 Jun 2009, at 08:43, Salil G. wrote:

I want to know why json format is used?

Best regards

Peter De Berdt