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= Datatypes in HTML = | = Datatypes in HTML = | ||
One of the challenges of using HTML as a data transport is that everything, by default, is a string. This page explores ways to use microformats -- specifically, class names -- to encode data type information, e.g., for use with [[xoxo]] and [[rest/ahah]]. | One of the challenges of using HTML as a data transport is that everything, by default, is a string. This page explores ways to use microformats -- specifically, class names -- to encode data type information, e.g., for use with [[xoxo]] and [[rest/ahah]], in order to allow lossless import/export from various languages. | ||
== Examples == | == Examples == | ||
These are the primary datatypes in a range of different languages and formats. | |||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
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! [http://www.w3.org/TR/xmlschema-2/#built-in-datatypes XML Schema] | ! [http://www.w3.org/TR/xmlschema-2/#built-in-datatypes XML Schema] | ||
| string || float, double || decimal, integer, etc. || boolean || hexBinary, base64Binary || duration, dateTime, date, time | | string || float, double || decimal, integer, etc. || boolean || hexBinary, base64Binary || duration, dateTime, date, time | ||
|- | |||
! [http://ws.apache.org/xmlrpc/types.html XML-RPC] | |||
| string || double || i4, int|| boolean || base64 || dateTime.iso8601 | |||
|- | |- | ||
! [http://developer.apple.com/documentation/Cocoa/Conceptual/PropertyLists/Concepts/XMLPListsConcept.html Mac OS X plists] | ! [http://developer.apple.com/documentation/Cocoa/Conceptual/PropertyLists/Concepts/XMLPListsConcept.html Mac OS X plists] | ||
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|- | |- | ||
! [http://www.crockford.com/JSON JSON] (JavaScript) | ! [http://www.crockford.com/JSON JSON] (JavaScript) | ||
| string || number || number || true, false | | string || number || number || true, false || N/A || Date | ||
|- | |- | ||
! [http://yaml.org/spec/current.html#id2503753 YAML] tags | ! [http://yaml.org/spec/current.html#id2503753 YAML] tags | ||
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|- | |- | ||
|} | |} | ||
== Criteria == | |||
== Proposals == | == Proposals == | ||
Revision as of 01:18, 9 January 2006
Datatypes in HTML
One of the challenges of using HTML as a data transport is that everything, by default, is a string. This page explores ways to use microformats -- specifically, class names -- to encode data type information, e.g., for use with xoxo and rest/ahah, in order to allow lossless import/export from various languages.
Examples
These are the primary datatypes in a range of different languages and formats.
| Language/format | string | float | integer | boolean | data | date/time |
|---|---|---|---|---|---|---|
| XML Schema | string | float, double | decimal, integer, etc. | boolean | hexBinary, base64Binary | duration, dateTime, date, time |
| XML-RPC | string | double | i4, int | boolean | base64 | dateTime.iso8601 |
| Mac OS X plists | string | real | integer | true, false | data | date |
| C | char* | float, double | int, long, short | byte | void* | N/A |
| JSON (JavaScript) | string | number | number | true, false | N/A | Date |
| YAML tags | str | int | float | bool | null (base 64) | N/A |
Criteria
Proposals
- TBD
References
- Datatypes in Wikipedia
- Origional datatype discussion
- Original plist datatype mapping proposal
- Revised xoxo datatype proposal