JSON: Difference between revisions
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== Definition == | == Definition == | ||
{{quotation | JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.}} ([http://www.json.org/ JSON], retrieved 19: | {{quotation | JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.}} ([http://www.json.org/ JSON], retrieved 19:07, 15 May 2007 (MEST)). | ||
{{quotation | '''JSON''' (JavaScript Object Notation) is a lightweight computer data interchange format. It is a text-based, human-readable format for representing objects and other data structures and is mainly used to transmit such structured data over a network connection (in a process called serialization). JSON finds its main application in [[ | {{quotation | '''JSON''' (JavaScript Object Notation) is a lightweight computer data interchange format. It is a text-based, human-readable format for representing objects and other data structures and is mainly used to transmit such structured data over a network connection (in a process called serialization). JSON finds its main application in [[AJAX]] web application programming, as a simple alternative to using XML for asynchronously transmitting structured information between client and server.}} ([http://en.wikipedia.org/wiki/JSON], retrieved 19:07, 15 May 2007 (MEST)) | ||
== Technology == | == Technology == | ||
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* JSON is one of the rare modern data-interchange formats that is '''not''' XML. | * JSON is one of the rare modern data-interchange formats that is '''not''' XML. | ||
From the JSON website, , retrieved 19: | From the JSON website, , retrieved 19:07, 15 May 2007 (MEST): | ||
JSON is built on two structures: | |||
* A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array. | * A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array. | ||
* An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence. | * An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence. | ||
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myJSONObject.bindings[0].method // "newURI" | myJSONObject.bindings[0].method // "newURI" | ||
== Links == | == Links == | ||
Revision as of 19:07, 15 May 2007
Definition
“JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.” (JSON, retrieved 19:07, 15 May 2007 (MEST)).
“JSON (JavaScript Object Notation) is a lightweight computer data interchange format. It is a text-based, human-readable format for representing objects and other data structures and is mainly used to transmit such structured data over a network connection (in a process called serialization). JSON finds its main application in AJAX web application programming, as a simple alternative to using XML for asynchronously transmitting structured information between client and server.” ([1], retrieved 19:07, 15 May 2007 (MEST))
Technology
- JSON is one of the rare modern data-interchange formats that is not XML.
From the JSON website, , retrieved 19:07, 15 May 2007 (MEST):
JSON is built on two structures:
- A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
- An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.
JSON is a subset of the object literal notation of JavaScript. Since JSON is a subset of JavaScript, it can be used in the language with no muss or fuss.
var myJSONObject = {"bindings": [
{"ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*"},
{"ircEvent": "PRIVMSG", "method": "deleteURI", "regex": "^delete.*"},
{"ircEvent": "PRIVMSG", "method": "randomURI", "regex": "^random.*"}
]
};
In this example, an object is created containing a single member "bindings", which contains an array containing three objects, each containing "ircEvent", "method", and "regex" members.
Members can be retrieved using dot or subscript operators.
myJSONObject.bindings[0].method // "newURI"
Links
- Official
- JSON HomePage
- RFC 4627 JSON specification
- Tutorials and Overviews