# How to use json? why it used?

**URL:** <https://www.ruby-forum.com/t/how-to-use-json-why-it-used/171298>\
**Category:** Rails\
**Created:** [June 30, 2009, 8:43am UTC](https://www.ruby-forum.com/t/how-to-use-json-why-it-used/171298 "2009-06-30T08:43:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![salil](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@salil](https://www.ruby-forum.com/u/salil)\
**Post date:** [June 30, 2009, 8:43am UTC](https://www.ruby-forum.com/t/how-to-use-json-why-it-used/171298/1 "2009-06-30T08:43:01Z")

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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.

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**Author:** ![salil](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@salil](https://www.ruby-forum.com/u/salil)\
**Post date:** [June 30, 2009, 9:54am UTC](https://www.ruby-forum.com/t/how-to-use-json-why-it-used/171298/2 "2009-06-30T09:54:28Z")

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

> I want to know why json format is used?

> **[JSON](https://en.wikipedia.org/wiki/JSON)**
>
> JSON (JavaScript Object Notation, pronounced /ˈdʒeɪsən/; also /ˈdʒeɪˌsɒn/) is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays (or other serializable values). It is a common data format with diverse uses in electronic data interchange, including that of web applications with servers.
> JSON is a language-independent data format. It was derived from JavaScript, but many modern...

Best regards

Peter De Berdt