json the fatfree alternative to xml4594

8/10/2019 Json the Fatfree Alternative to Xml4594

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Presented by

Pushkar S. Dahibhate


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JSON is a simple, common representation ofdata.

Communication between servers and browser

clients.

Language independent data interchange.


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Database Model

Document Model

Programming Language Model


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JavaScript Object Notation

Minimal

Textual

Subset of JavaScript


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A Subset of ECMA-262 Third Edition.

Language Independent.

Text-based.

Light-weight.

Easy to parse.


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JSON is not a document format.

JSON is not a markup language.

No cyclical/recurring structures.

No invisible structures.

No functions.


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Filename extension:- .json

Internet media type:- application/json

Uniform Type Identifier UTI):-

public.json Type of format :- Data interchange

Extended from :-JavaScript
http://en.wikipedia.org/wiki/Filename_extensionhttp://en.wikipedia.org/wiki/Internet_media_typehttp://en.wikipedia.org/wiki/Uniform_Type_Identifierhttp://en.wikipedia.org/wiki/JavaScripthttp://en.wikipedia.org/wiki/JavaScripthttp://en.wikipedia.org/wiki/Uniform_Type_Identifierhttp://en.wikipedia.org/wiki/Uniform_Type_Identifierhttp://en.wikipedia.org/wiki/Uniform_Type_Identifierhttp://en.wikipedia.org/wiki/Internet_media_typehttp://en.wikipedia.org/wiki/Internet_media_typehttp://en.wikipedia.org/wiki/Internet_media_typehttp://en.wikipedia.org/wiki/Filename_extension


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Douglas Crockfordwas the first to specifyand popularize the JSON format

TheJSON.orgWeb site was launched in 2002.

In December 2005, Yahoo!began offeringsome of its Web servicesin JSON

Googlestarted offering JSON feeds for itsGDataweb protocol in December 2006.
http://en.wikipedia.org/wiki/Douglas_Crockfordhttp://json.org/http://en.wikipedia.org/wiki/Yahoo%21http://en.wikipedia.org/wiki/Web_servicehttp://en.wikipedia.org/wiki/Googlehttp://en.wikipedia.org/wiki/GDatahttp://en.wikipedia.org/wiki/GDatahttp://en.wikipedia.org/wiki/Googlehttp://en.wikipedia.org/wiki/Web_servicehttp://en.wikipedia.org/wiki/Yahoo%21http://json.org/http://en.wikipedia.org/wiki/Douglas_Crockford


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Strings Numbers

Booleans

Objects

Arrays

Null


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Sequence of 0 or more Unicode characters

No separate character type A character is represented as a string with a length

of 1

Wrapped in "double quotes"

Backslash escapement


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Integer Real

Scientific

No octal or hex


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True

False


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var Pushkar = {

"age" : "22",

"hometown" : Aurangabad, MH","gender" : "male"

};

This creates an object that we access using the

variable Pushkar


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document.write(Pushkar is ' Pushkar.age);

// Output: Pushkar is 22

document.write('Jason is a ' Pushkar.gender);// Output: Pushkar is a male


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Chinese

English

French

German Italian

Japanese

Korean Spanish


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JSON XML

Stands For JSON : JavaScript Object Notation. XML: Extensible Markup Language.

Extended From JSON is extended from JavaScript. XML is extended from SGML:

Standard Generalized Markup

Language.

Purpose JSON is one type of text-based format or

standard for interchanging data i.e.human

readable.

XML is a Markup Languagehaving

format that contains set of rules for the

encoding the documents which is readable

for both human & machine.

Syntax

JSON syntax is lighter than XML as JSONhas serialized format of data having less

redundancy. JSON does not contain start and

end tags.

XML is not so lighter as JSON as havingstart and end tags and it takes more

character than JSON to represent same

data.

Speed JSON is light weighted in compare to

XML and so faster also.

XML is not so light weighted as JSON. So

it slower

Support of Data Type

JSON supports datatypeincluding integer

and strings

XML does not provide any data type so

needs to be parsedinto particular data

type

CommentsJSON does not support Comments XML supports comments

ApplicationFor Web services, JSON is better. For configuration, XML is better

Changing Format

You can not change JSON data to other

format

In XML, using XSLTyou can change

XML data into another format like

commadelimited, plain text, JSON, etc


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JSON is light weight component. It doesnttake more time for execution.

It supports data structures used in modernlanguages.

In Java script we cannot retrieve values from

other files for example java.In JSON we can retrieve values fromanywhere. It supports all languages


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You can not change JSON data to otherformat.

JSON Doesn't Have Namespaces.

JSON Has No Validator.

JSON Is Not Extensible.


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"Doug Crockford "Google Tech Talks:JavaScript: The Good Parts"

"JSON: The Fat-Free Alternative to XML".json.org
http://www.youtube.com/watch?v=hQVTIJBZookhttp://www.youtube.com/watch?v=hQVTIJBZookhttp://www.json.org/xml.htmlhttp://www.json.org/xml.htmlhttp://www.json.org/xml.htmlhttp://www.json.org/xml.htmlhttp://www.youtube.com/watch?v=hQVTIJBZookhttp://www.youtube.com/watch?v=hQVTIJBZook


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json the fatfree alternative to xml4594

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