JSON - Revision history

Ross-spencer: Add ffs

2026-03-18T19:58:42Z

Add ffs

Jsummers: /* Utilities */

2025-05-30T16:56:27Z

‎Utilities

Sembiance: /* Sample files */

2023-12-28T15:02:37Z

‎Sample files

Paulehoffman: Said where I-JSON came from

2023-12-09T00:07:11Z

Said where I-JSON came from

Foxtrot: /* JSONP */

2023-08-02T12:00:54Z

‎JSONP

Dan Tobias: /* Format */

2022-06-21T19:45:55Z

‎Format

Dan Tobias: /* Format */

2022-06-21T19:44:26Z

‎Format

Dan Tobias: /* JSON Pointer */

2021-10-09T16:43:01Z

‎JSON Pointer

Dan Tobias: /* JSON Pointer */

2021-10-09T16:39:00Z

‎JSON Pointer

Dan Tobias: /* JSON Pointer */

2021-10-09T16:38:35Z

‎JSON Pointer

@@ Line 76: / Line 76: @@
 * [http://textract.readthedocs.org/en/latest/ Textract: extract text from various document formats including JSON]
 * [https://github.com/ffdev-info/jsonid jsonid] ([https://openpreservation.org/blogs/on-the-lookout-looking-for-common-json-files-and-introducing-jsonid/ more info])
 == Other links ==

@@ Line 75: / Line 75: @@
 * [http://papaparse.com/ PapaParse: in-browser conversions between CSV and JSON]
 * [http://textract.readthedocs.org/en/latest/ Textract: extract text from various document formats including JSON]
 == Other links ==

@@ Line 62: / Line 62: @@
 * RFC 4627
-== Sample data ==
+== Sample files ==
-−
 * [http://parltrack.euwiki.org/dumps/ Data from European Parliament in JSON form] (Source: [http://parltrack.euwiki.org/ ParlTrack])
 == Utilities ==

@@ Line 9: / Line 9: @@
 |wikidata={{wikidata|Q2063}}
 }}
-'''JSON''' (JavaScript Object Notation) is widely used by web applications, APIs, mobile apps, and other programs to communicate between different systems (such as between a client and server), and as a save format for data storage. While it is named after [[JavaScript]], there are libraries for many other programming and scripting languages to let them use this format as well. It is used as the basis of a number of specialized formats; the geospatial format [[GeoJSON]] is based on JSON, as is the remote-procedure-call protocol [[JSON-RPC]] and the [[JSON-LD]] linked-data format. The IBM standard of [[JSONx]] is an [[XML]] implementation of JSON. [[I-JSON]] is a restricted profile of JSON for Internet use. [[JSON Web Tokens]], [[JSON Web Encryption]], and [[JSON Web Signatures]] are JSON-based formats for security-related functions.
+'''JSON''' (JavaScript Object Notation) is widely used by web applications, APIs, mobile apps, and other programs to communicate between different systems (such as between a client and server), and as a save format for data storage. While it is named after [[JavaScript]], there are libraries for many other programming and scripting languages to let them use this format as well. It is used as the basis of a number of specialized formats; the geospatial format [[GeoJSON]] is based on JSON, as is the remote-procedure-call protocol [[JSON-RPC]] and the [[JSON-LD]] linked-data format. The IBM standard of [[JSONx]] is an [[XML]] implementation of JSON. [[I-JSON]] is a restricted profile of JSON for Internet use developed by the IETF. [[JSON Web Tokens]], [[JSON Web Encryption]], and [[JSON Web Signatures]] are JSON-based formats for security-related functions.
 == Format ==

← Older revision		Revision as of 12:00, 2 August 2023
Line 28:		Line 28:

	'''JSONP''' is a variant of JSON, "padded" with additional [[JavaScript]] code to permit the entire data set to be a valid piece of JS code able to be imported via a <code><script></code> statement for execution. Generally the extra code will be a function call encompassing the JSON data as its parameter, but sometimes it will be a variable assignment or other code. This gets around security restrictions in browser implementations of JavaScript which limit use of external data loaded from other sites (script statements can reference outside URLs), making it both very powerful and very dangerous if misused.		'''JSONP''' is a variant of JSON, "padded" with additional [[JavaScript]] code to permit the entire data set to be a valid piece of JS code able to be imported via a <code><script></code> statement for execution. Generally the extra code will be a function call encompassing the JSON data as its parameter, but sometimes it will be a variable assignment or other code. This gets around security restrictions in browser implementations of JavaScript which limit use of external data loaded from other sites (script statements can reference outside URLs), making it both very powerful and very dangerous if misused.
		+
		+	Largely, JSONP has been superseded by the wider browser support for JSON and introduction of [https://en.wikipedia.org/wiki/JSONP CORS].

	== JSON Pointer ==		== JSON Pointer ==

@@ Line 23: / Line 23: @@
 * '''object''': An associative array consisting of names and values, where the name and value are separated by a colon (:), the name/value pairs are separated by commas, and the whole object is surrounded by curly braces {}. The name is a (double-quoted) string, and the value can be any of the data types in JSON including another object. There is no inherent ordering to the values of an object. (Other formats and programming languages may call these ''associative arrays'', ''hashes'', ''maps'', or ''dictionaries''.)
-* '''array''': An ordered collection of values, which can each be any of the JSON data types, and are separated by commas and surrounded by square brackets []. (Other formats and programming languages may call these ''arrays'' or ''lists''.)
+* '''array''': An ordered collection of values, which can each be any of the JSON data types, and are separated by commas and surrounded by square brackets []. (Other formats and programming languages may call these ''arrays'', ''collections'', or ''lists''.)
 == JSONP ==

@@ Line 21: / Line 21: @@
 * ''true'', ''false'', or ''nil'' are permitted as typeless values. (Other formats and programming languages may put these into boolean or pointer types.)
-* '''object''': An associative array consisting of names and values, where the name and value are separated by a colon (:), the name/value pairs are separated by commas, and the whole object is surrounded by curly braces {}. The name is a (double-quoted) string, and the value can be any of the data types in JSON including another object. There is no inherent ordering to the values of an object. (Other formats and programming languages may call these ''associative arrays'', ''hashes'', or ''dictionaries''.)
+* '''object''': An associative array consisting of names and values, where the name and value are separated by a colon (:), the name/value pairs are separated by commas, and the whole object is surrounded by curly braces {}. The name is a (double-quoted) string, and the value can be any of the data types in JSON including another object. There is no inherent ordering to the values of an object. (Other formats and programming languages may call these ''associative arrays'', ''hashes'', ''maps'', or ''dictionaries''.)
 * '''array''': An ordered collection of values, which can each be any of the JSON data types, and are separated by commas and surrounded by square brackets []. (Other formats and programming languages may call these ''arrays'' or ''lists''.)

@@ Line 31: / Line 31: @@
 == JSON Pointer ==
-JSON Pointer (described in RFC 6901) is a syntax for referencing a specific value within a JSON document. It consists of a string with hierarchical elements separated by slashes (/), each element being a reference to an element of the JSON document (e.g., the label name of an object element or the numerical index of an array element). Thus, "/foo/0" represents the first (zeroth) element of the array which is at the label "foo" of a parent object. Escape sequences ~1 and ~0 are used to represent a slash (/) and a tilde (~) respectively.
+JSON Pointer (described in RFC 6901) is a syntax for referencing a specific value within a JSON document. It consists of a string with hierarchical elements separated by slashes (/), each element being a reference to an element of the JSON document (e.g., the label name of an object element or the numerical index of an array element). Thus, "/foo/0" represents the first (zeroth) element of the array which is at the label "foo" of a parent object. Escape sequences ~1 and ~0 are used to represent a slash (/) and a tilde (~) respectively, with ~1 being processed first to avoid misparsing strings with "~01" (which represents "~1", not "/").
 == See also ==