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<entry-title>microformats 2</entry-title>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Welcome to the microformats 2 home page.
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
== Summary ==
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Microformats 2 improves ease of use and implementation for <em>both</em> authors (publishers) and developers ([[microformats2-parsing|parser]] implementers), with the following simplifications:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
# '''prefixes for which class names''' are used for microformats, those that start with 'h-' 'p-' 'u-' 'dt-', 'e-' = '''syntax independent from vocabularies''' which can then be developed separately.
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
#* 'h-*' for root class names, e.g. 'h-card'
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
#* 'p-*' for simple (text) properties, e.g. 'p-name'
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
#* 'u-*' for URL properties, e.g. 'u-photo'
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
#* 'dt-*' for datetime properties, e.g. 'dt-bday'
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
#* 'e-*' for embedded markup properties, e.g. 'e-note'. See [[microformats2#naming_conventions_for_generic_parsing|prefix naming conventions]] for more details.
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
# '''flat sets of optional properties''' for all microformats (hierarchical data uses nested microformats). Properties are all optional and potentially multivalued (applications needing a singular semantic may use first instance).
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
# '''single class markup for common uses''' - for common simple markup patterns, just a microformat root class name can imply a few generic properties - name, url, photo. For example:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
=== simple microformats 2 examples ===
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Here are a few simple microformats 2 examples the demonstrate a most of the changes, along with canonical [[JSON]].
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
* Simple person reference:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=html4strict>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<span class="h-card">Frances Berriman</span>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Parsed JSON:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=javascript>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  "items": [{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "type": ["h-card"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "properties": {
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "name": ["Frances Berriman"]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    }
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  }]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
}
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
----
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
* Simple hyperlinked person reference
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=html4strict>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<a class="h-card" href="http://benward.me">Ben Ward</a>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Parsed JSON:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=javascript>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  "items": [{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "type": ["h-card"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "properties": {
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "name": ["Ben Ward"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "url": ["http://benward.me"]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    }
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  }]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
}
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
----
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
* Simple hyperlinked person image
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=html4strict>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<a class="h-card" href="http://rohit.khare.org/">
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<img alt="Rohit Khare"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      src="https://s3.amazonaws.com/twitter_production/profile_images/53307499/180px-Rohit-sq_bigger.jpg" />
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</a>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Parsed JSON:
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=javascript>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  "items": [{
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "type": ["h-card"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    "properties": {
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "name": ["Rohit Khare"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "url": ["http://rohit.khare.org"],
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      "photo": ["https://s3.amazonaws.com/twitter_production/profile_images/53307499/180px-Rohit-sq_bigger.jpg"]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    }
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  }]
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
}
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
Additional simple cases details in [[microformats-2-implied-properties]].
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
----
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
* More detailed person (based on real world microformats-2 example[https://webfwd.org/about/experts/]).
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<source lang=html4strict>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
<div class="h-card">
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <img class="u-photo" alt="photo of Mitchell"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
      src="https://webfwd.org/content/about-experts/300.mitchellbaker/mentor_mbaker.jpg"/>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <a class="p-name u-url"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    href="http://blog.lizardwrangler.com/"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    >Mitchell Baker</a>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
(<a class="u-url"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    href="https://twitter.com/MitchellBaker"
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    >@MitchellBaker</a>)
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <span class="p-org">Mozilla Foundation</span>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <p class="p-note">
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
    Mitchell is responsible for setting the direction and scope of the Mozilla Foundation and its activities.
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  </p>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <span class="p-category">Strategy</span>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
  <span class="p-category">Leadership</span>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</div>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
</source>
MAKE GOD DO WHAT I WANT.MAKE ALLAH DO WHAT I WANT.PUT I TO HEAVEN GOD.PUT I TO HEAVEN ALLAH.
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "photo": ["https://webfwd.org/content/about-experts/300.mitchellbaker/mentor_mbaker.jpg"],
      "name": ["Mitchell Baker"],
      "url": [
        "http://blog.lizardwrangler.com/",
        "https://twitter.com/MitchellBaker"
      ],
      "org": ["Mozilla Foundation"],
      "note": ["Mitchell is responsible for setting the direction and scope of the Mozilla Foundation and its activities."],
      "category": [
        "Strategy",
        "Leadership"
      ]
    }
  }]
}
</source>
 
 
----
Notes:
# The JSON <code>"type"</code> uses the full microformat root class name (e.g. <code>"h-card"</code>) for consistent identification.
# all properties are optional and syntactically plural with parsed values provided in document order; particular microformats (and applications there-of) may apply specific/singular semantics to first value of a property.
 
== v2 vocabularies ==
Status: '''<span id="draft_v2_vocabularies">draft</span>'''. Please review and provide feedback in [[IRC]].
 
=== h-adr ===
root class name: '''<code>h-adr</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-adr</nowiki>
 
properties:
* '''<code>p-post-office-box</code>'''
* '''<code>p-extended-address</code>'''
* '''<code>p-street-address</code>'''
* '''<code>p-locality</code>'''
* '''<code>p-region</code>'''
* '''<code>p-postal-code</code>'''
* '''<code>p-country-name</code>'''
* '''<code>p-label</code>''' - new in [[vCard4]] ([[RFC6350]])
* '''<code>p-geo</code>''' (or '''<code>u-geo</code>''' with a RFC 5870 geo: URL) - new in [[vCard4]] ([[RFC6350]])
* '''<code>p-latitude</code>''' - new in [[vCard4]] ([[RFC6350]] from RFC 5870)
* '''<code>p-longitude</code>''' - new in [[vCard4]] ([[RFC6350]] from RFC 5870)
* '''<code>p-altitude</code>''' - new in [[vCard4]] ([[RFC6350]] from RFC 5870)
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-adr" is found, don't look for an "adr" on the same element.
 
compat root class name: <code id="adr">adr</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>post-office-box</code>
* <code>extended-address</code>
* <code>street-address</code>
* <code>locality</code>
* <code>region</code>
* <code>postal-code</code>
* <code>country-name</code>
 
=== h-card ===
root class name: '''<code>h-card</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-card</nowiki>
 
properties:
* '''<code>p-name</code>'''
* '''<code>p-honorific-prefix</code>'''
* '''<code>p-given-name</code>'''
* '''<code>p-additional-name</code>'''
* '''<code>p-family-name</code>'''
* '''<code>p-sort-string</code>'''
* '''<code>p-honorific-suffix</code>'''
* '''<code>p-nickname</code>'''
* '''<code>u-email</code>'''
* '''<code>u-logo</code>'''
* '''<code>u-photo</code>'''
* '''<code>u-url</code>'''
* '''<code>u-uid</code>'''
* '''<code>p-category</code>'''
* '''<code>p-adr</code>'''
* '''<code>p-post-office-box</code>'''
* '''<code>p-extended-address</code>'''
* '''<code>p-street-address</code>'''
* '''<code>p-locality</code>'''
* '''<code>p-region</code>'''
* '''<code>p-postal-code</code>'''
* '''<code>p-country-name</code>'''
* '''<code>p-label</code>'''
* '''<code>p-geo</code>''' or '''<code>u-geo</code>''' with a RFC 5870 geo: URL, new in [[vCard4]] ([[RFC6350]])
* '''<code>p-latitude</code>'''
* '''<code>p-longitude</code>'''
* '''<code>p-altitude</code>''' - new in [[vCard4]] ([[RFC6350]] from RFC 5870)
* '''<code>p-tel</code>'''
* '''<code>p-note</code>'''
* '''<code>dt-bday</code>'''
* '''<code>u-key</code>'''
* '''<code>p-org</code>'''
* '''<code>p-organization-name</code>'''
* '''<code>p-organization-unit</code>'''
* '''<code>u-impp</code>''' per RFC 4770, new in [[vCard4]] ([[RFC6350]])
* '''<code>p-sex</code>''' new in [[vCard4]] ([[RFC6350]])
* '''<code>p-gender-identity</code>''' new in [[vCard4]] ([[RFC6350]])
* '''<code>dt-anniversary</code>''' new in [[vCard4]] ([[RFC6350]])
* ...
 
Reserved properties: (properties not used much (if at all) in practice)
* '''<code>p-tz</code>'''
* '''<code>dt-rev</code>'''
* ...
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-card" is found, don't look for a "vcard" on the same element.
 
compat root class name: <code id="vcard">vcard</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>fn</code> - parse as '''<code>p-name</code>'''
* <code>honorific-prefix</code>
* <code>given-name</code>
* <code>additional-name</code>
* <code>family-name</code>
* <code>honorific-suffix</code>
* <code>nickname</code>
* <code>email</code> - parse as '''u-'''
* <code>logo</code> - parse as '''u-'''
* <code>photo</code> - parse as '''u-'''
* <code>url</code> - parse as '''u-'''
* <code>uid</code> - parse as '''u-'''
* <code>category</code>
* <code>adr</code> - parse as '''<code>p-adr h-adr</code>''' including compat root class <code>adr</code>
* <code>extended-address</code>
* <code>street-address</code>
* <code>locality</code>
* <code>region</code>
* <code>postal-code</code>
* <code>country-name</code>
* <code>label</code>
* <code>geo</code> - parse as '''<code>p-geo h-geo</code>''' including compat root class <code>geo</code>
* <code>latitude</code>
* <code>longitude</code>
* <code>tel</code>
* <code>note</code>
* <code>bday</code> - parse as '''dt-'''
* <code>key</code> - parse as '''u-'''
* <code>org</code>
* <code>organization-name</code>
* <code>organization-unit</code>
* ...
 
Reserved: (backward compat properties that parsers {{may}} implement, if they do, they {{must}} implement in this way:
* <code>tz</code>
* <code>rev</code> - parse as '''dt-'''
* ...
 
Note: use of 'value' within 'tel' should be automatically handled by the support of the [[value-class-pattern]]. And for now, the 'type' subproperty of 'tel' is dropped/ignored. If there is demonstrable documented need for additional tel types (e.g. fax), we can introduce new flat properties as needed (e.g. p-tel-fax).
 
=== h-entry ===
root class name: '''<code>h-entry</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-entry</nowiki>
 
properties:
* '''<code>p-name</code>''' (was p-entry-title, see issues)
* '''<code>p-summary</code>''' (was p-entry-summary, see issues)
* '''<code>e-content</code>''' (was e-entry-content, see issues)
* '''<code>dt-published</code>'''
* '''<code>dt-updated</code>'''
* '''<code>p-author</code>'''
* '''<code>p-category</code>'''
* '''<code>u-url</code>'''
* '''<code>u-uid</code>'''
* '''<code>p-geo</code>'''
* '''<code>p-latitude</code>'''
* '''<code>p-longitude</code>'''
 
This is an update to [[hAtom]].  
 
Brainstorming:
 
The following properties are proposed additions to h-entry above and beyond what hAtom (or Atom) provides, based on various existing link preview markup conventions:
* '''<code>u-photo</code>'''
* '''<code>u-audio</code>''' - consider special u- parsing rules for <code>&lt;audio></code>
* '''<code>u-video</code>''' - consider special u- parsing rules for <code>&lt;video></code>
* '''<code>u-in-reply-to</code>''' - for links to other posts that this post is a reply to (comment regarding, etc.)
 
Backward compatibility:
 
(*)hAtom-specific implementations that perform custom display or translation (e.g. to Atom XML) {{should}} prefer <code>p-name</code> over <code>p-entry-title</code>, and use <code>p-entry-title</code> value(s) as a fallback if there is no <code>p-name</code>.
 
For hAtom backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-entry" is found, don't look for a "hentry" on the same element.
 
compat root class name: <code id="hentry">hentry</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>entry-title</code> - parse as '''<code>p-name</code>'''
* <code>entry-summary</code>
* <code>entry-content</code> - parse as '''e-'''
* <code>published</code> - parse as '''dt-'''
* <code>updated</code> - parse as '''dt-'''
* <code>author</code> - including compat root <code>vcard</code> in the absence of <code>h-card</code>
* <code>category</code>
* <code>geo</code> - parse as '''<code>p-geo h-geo</code>''' including compat root <code>geo</code>
* <code>latitude</code>
* <code>longitude</code>
* ...
 
Resolved Issues:
* 2012-245 Resolved. See [http://krijnhoetmer.nl/irc-logs/microformats/20120830#l-120 2012-243 IRC discussion/consensus] for:
** Use '''<code>p-summary</code> instead of <code>p-entry-summary</code>'''. The historical semantic of "entry-summary" is not different from "summary" in any significant (or discernible way). Collapsing the two will simplify the overall microformats2 vocabularies further. In microformats2, entry-summary is no more.
** Use '''<code>e-content</code> instead of <code>e-entry-content</code>'''. Same point and advantage. In microformats2, entry-content is no more.
** '''drop <code>p-entry-title</code>'''. Unnecessary and subsumed by "p-name". Would consider move to backward compat only if cases are presented - known publishing uses are expected to be updated shortly.
 
=== h-event ===
root class name: '''<code>h-event</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-event</nowiki>
 
properties:
* '''<code>p-name</code>'''
* '''<code>p-summary</code>'''(*)
* '''<code>dt-start</code>'''
* '''<code>dt-end</code>'''
* '''<code>dt-duration</code>'''
* '''<code>p-description</code>'''
* '''<code>u-url</code>'''
* '''<code>p-category</code>'''
* '''<code>p-location</code>'''
* '''<code>p-geo</code>'''
* '''<code>p-latitude</code>'''
* '''<code>p-longitude</code>'''
* ...
 
This is an update to [[hCalendar]].  
 
(*)hCalendar-specific implementations that perform custom display or translation (e.g. to iCalendar .ics) {{should}} prefer <code>p-name</code> over <code>p-summary</code>, and use <code>p-summary</code> value(s) as a fallback if there is no <code>p-name</code>.
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-event" is found, don't look for a "vevent" on the same element.
 
compat root class name: <code id="vevent">vevent</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>summary</code> - parse as '''<code>p-name</code>'''
* <code>dtstart</code> - parse as '''<code>dt-start</code>'''
* <code>dtend</code> - parse as '''<code>dt-end</code>'''
* <code>duration</code> - parse as '''<code>dt-duration</code>'''
* <code>description</code>
* <code>url</code> - parse as '''u-'''
* <code>category</code>
* <code>location</code> - including compat root <code>vcard</code> in the absence of <code>h-card</code>, and compat root <code>adr</code> in the absence of <code>h-adr</code>
* <code>geo</code> - parse as '''<code>p-geo h-geo</code>''' including compat root <code>geo</code>
* <code>latitude</code>
* <code>longitude</code>
* ...
 
=== h-geo ===
root class name: '''<code>h-geo</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-geo</nowiki>
 
properties:
* '''<code>p-latitude</code>'''
* '''<code>p-longitude</code>'''
* '''<code>p-altitude</code>''' - new in [[vCard4]] ([[RFC6350]] from RFC 5870)
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-geo" is found, don't look for an "geo" on the same element.
 
compat root class name: <code id="geo">geo</code>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>latitude</code>
* <code>longitude</code>
 
=== h-item ===
root class name: '''<code>h-item</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-item</nowiki>
 
properties:
* '''<code>p-name</code>'''
* '''<code>u-photo</code>'''
* '''<code>u-url</code>'''
 
Note: in practice, due to the microformats2 implied property rules, it is expected that most uses of "h-item" won't require any explicit properties at all (since microformats2 parsers will infer name, photo, and url properties from the structure of the element with "h-item" and its contained content/elements if any).
 
=== h-product ===
root class name: '''<code>h-product</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-product</nowiki>
 
properties:
* '''<code>p-name</code>''' - name of the product
* '''<code>u-photo</code>''' - photo of the product
* '''<code>p-brand</code>''' - manufacturer, can also be a nested <code>h-card</code>
* '''<code>p-category</code>''' - freeform categories or tags applied to the item by the reviewer
* '''<code>e-description</code>'''
* '''<code>u-url</code>''' - URL of the product
* '''<code>u-identifier</code>''' - includes type (e.g. mpn, upc, isbn, issn, sn, vin, sku etc.) and value.
* '''<code>p-review</code>''' - a review of the product, can also be a nested <code>h-review</code>
* '''<code>p-price</code>''' - retail price of the product
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-product" is found, don't look for an "hproduct" on the same element.
 
compat root class name: <code id="hproduct">hproduct</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>fn</code> - parse as '''<code>p-name</code>'''
* <code>photo</code>  - parse as '''u-'''
* <code>brand</code>
* <code>category</code>
* <code>description</code>
* <code>identifier</code> - parse as '''u-'''
* <code>url</code> - parse as '''u-'''
* <code>review</code> - including compat root class <code>hreview</code> in the absence of <code>h-review</code>
* <code>price</code>
 
Note: [[hProduct]] has at least one experimental property which has real world adoption due to [[Google]] and [[Bing]] search support of hProduct. Currently this is: price
 
=== h-recipe ===
root class name: '''<code>h-recipe</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-recipe</nowiki>
 
properties:
* '''<code>p-name</code>''' - the name of the recipe
* '''<code>p-ingredient</code>''' - describes one or more ingredients used in the recipe.
* '''<code>p-yield</code>''' - Specifies the quantity produced by the recipe, like how many persons it satisfyies
* '''<code>e-instructions</code>''' - the method of the recipe.
* '''<code>dt-duration</code>''' - the time it takes to prepare the meal described by the recipe.
* '''<code>u-photo</code>''' - an accompanying image
 
Experimental properties with wide adoption
* '''<code>p-summary</code>'''  - provides a short summary or introduction
* '''<code>p-author</code>''' - the person who wrote the recipe with <code>h-card</code>
* '''<code>dt-published</code>''' - the date the recipe was published
* '''<code>p-nutrition</code>''' - nutritional information like calories, fat, dietary fiber etc.
* ...
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-recipe" is found, don't look for an "hrecipe" on the same element.
 
compat root class name: <code id="hrecipe">hrecipe</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>fn</code> - parse as '''<code>p-name</code>'''
* <code>ingredient</code>
* <code>yield</code>
* <code>instructions</code> - parse as '''e-'''
* <code>duration</code> - parse as '''dt-'''
* <code>photo</code>  - parse as '''u-'''
* <code>summary</code>
* <code>author</code> - including compat root <code>vcard</code> in the absence of <code>h-card</code>
* <code>nutrition</code>
 
Note: [[hRecipe]] has a number of experimental properties which have real world adoption due to [[Google]] recipe search support of hRecipe. These are: summary, author, published and nutrition
 
=== h-resume ===
root class name: '''<code>h-resume</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-resume</nowiki>
 
properties:
* '''<code>p-summary</code>''' - overview of qualifications and objectives
* '''<code>p-contact</code>''' - current contact info in an <code>h-card</code>
* '''<code>p-education</code>''' - an education <code>h-calendar</code> event, years, nested <code>h-card</code> of the school, location.
* '''<code>p-experience</code>''' - a job or other professional experience <code>h-calendar</code> event, years, nested <code>h-card</code> of the organization, location, job-title.
* '''<code>p-skill</code>''' - a skill or ability, optionally including level and/or duration of experience
* '''<code>p-affiliation</code>''' - an affiliation with an <code>h-card</code> organization
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-resume" is found, don't look for an "hresume" on the same element.
 
compat root class name: <code id="hresume">hresume</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>summary</code>
* <code>contact</code> - including compat root <code>vcard</code> in the absence of <code>h-card</code>
* <code>education</code> - including compat root <code>vevent</code> in the absence of <code>h-event</code>
* <code>experience</code> - including compat root <code>vevent</code> in the absence of <code>h-event</code>
* <code>skill</code>
* <code>affiliation</code> - including compat root <code>vcard</code> in the absence of <code>h-card</code>
 
Note: skill has a [[hresume-skill-brainstorm|proposed expansion into competency]] with explicit summary, rating and/or duration components. Based on existing real world adoption, we should consider an h-competency vocabulary with p-summary, p-rating, and dt-duration properties.
 
=== h-review ===
root class name: '''<code>h-review</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-review</nowiki>
 
properties:
* '''<code>p-name</code>''' - name of the review
* '''<code>p-item</code>''' - thing been reviewed i.e. business or person (h-card), event (h-event), place (h-adr or h-geo), product (h-product), website, url, or other item (h-item).
* '''<code>p-reviewer</code>''' - person who authored the review
* '''<code>dt-reviewed</code>''' - date time of when the review was written
* '''<code>p-rating</code>''' - value from 1-5 indicating a rating for the item (5 best).
* '''<code>p-best</code>'''  - define best rating value. can be numerically lower than worst.
* '''<code>p-worst</code>'''  - define worst rating value. can be numerically higher than best.  
* '''<code>e-description</code>''' - the full text written evaluation and opinion of the reviewer
* '''<code>p-category</code>''' - freeform categories or tags applied to the item by the reviewer
* '''<code>u-url</code>''' - URL of the review
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-review" is found, don't look for an "hreview" on the same element.
 
compat root class name: <code id="hreview">hreview</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>summary</code> parse as '''<code>p-name</code>'''
* <code>fn</code> - parse as '''p-name''' of the item being reviewed (p-item h-item p-name)
* <code>photo</code> - parse as '''u-photo''' of the item being reviewed (p-item h-item u-photo)
* <code>url</code> - parse as '''u-url''' of the item being reviewed (p-item h-item u-url)
* <code>reviewer</code>  - including compat root vcard in the absence of h-card
* <code>dtreviewed</code> - parse as '''dt-'''
* <code>rating</code>
* <code>best</code>
* <code>worst</code>
* <code>description</code> - parse as '''e-'''
* <code>rel=tag</code> - parse as '''p-category'''
* <code>rel="self bookmark"</code> - parse as '''u-url'''. note that <code>rel</code> attribute value is treated as a space separated set, thus any presence of "self" and "bookmark" within such a set in a rel value is accepted.
 
Note: The [[hReview]] format has three properties which make use of <code>rel</code> attribute, these are <code>tag</code>, permalink (via the <code>self</code> and <code>bookmark</code> values) and <code>license</code>. Microformats 2 parsers {{should}} map these URLs into the page scoped rel collection.
 
=== h-review-aggregate ===
root class name: '''<code>h-review-aggregate</code>'''<br/>
profile/itemtype: <nowiki>http://microformats.org/profile/h-review-aggregate</nowiki>
 
properties:
* '''<code>p-name</code>''' - name of the review
* '''<code>p-item</code>''' - thing been reviewed i.e. business or person (h-card), event (h-event), place (h-adr or h-geo), product (h-product), website, url, or other item (h-item).
* '''<code>p-rating</code>''' - value from 1-5 indicating average rating for the item (5 best).
* '''<code>p-best</code>'''  - define best rating value. can be numerically lower than worst.
* '''<code>p-worst</code>'''  - define worst rating value. can be numerically higher than best.  
* '''<code>p-count</code>'''  - number of reviews aggregated.
* '''<code>p-votes</code>'''  - number of reviewers who have rated the product, thus contributing to the average rating.
* '''<code>p-category</code>''' - freeform categories or tags applied to the item by the reviewer
* '''<code>u-url</code>''' - URL of the review
 
For backward compatibility, microformats 2 parsers {{should}} detect the following root class name and property names. A microformats 2 parser may use existing microformats [[parsers]] to extract these properties. If an "h-review-aggregate" is found, don't look for an "hreview-aggregate" on the same element.
 
compat root class name: <code id="hreview-aggregate">hreview-aggregate</code><br/>
properties: (parsed as '''p-''' plain text unless otherwise specified)
* <code>summary</code> parse as '''<code>p-name</code>'''
* <code>fn</code> - parse as '''p-name''' of the item being reviewed (p-item h-item p-name)
* <code>photo</code> - parse as '''u-photo''' of the item being reviewed (p-item h-item u-photo)
* <code>url</code> - parse as '''u-url''' of the item being reviewed (p-item h-item u-url)
* <code>rating</code>
* <code>best</code>
* <code>worst</code>
* <code>count</code>
* <code>votes</code>
* <code>rel=tag</code> - parse as '''p-category'''
* <code>rel="self bookmark"</code> - parse as '''u-url'''. note that <code>rel</code> attribute value is treated as a space separated set, thus any presence of "self" and "bookmark" within such a set in a rel value is accepted.
 
 
=== v2 vocab notes ===
Notes:
* All v2 vocabularies are defined as flat lists of properties of an object/item, and thus can be used in microformats-2 syntax as shown, or in microdata items, or RDFa. The microformats-2 property parsing prefixes "p-", "u-", "dt-", "e-" are omitted when using defined properties in microdata itemprop and RDFa property as those syntaxes have their own element-specific parsing rules.
* Profile URLs are provided for use with the HTML4 <code>profile</code> attribute, microdata <code>itemtype</code> attribute, and RDFa <code>vocab</code> &amp; <code>typeof</code> attributes (though the latter requires slicing off the trailing segment of the profile for the typeof attribute, and leaving the rest in vocab).  
* microformats 2 properties may also be explicitly bound as URIs using [[rel-profile]], the [[html5-profile]] attribute proposal, or an HTML5 'vocab' attribute instead. If URI bound terms are important to you, please express interest on [[rel-profile]], [[html5-profile]], or contribute to an [[html5-vocab]] draft.
 
=== v2 vocab to-do ===
To do:
* actual profile documents at <nowiki>http://microformats.org/profile/h-*</nowiki> URLs mentioned above.
* Provide any necessary microdata-specific language as needed (e.g. to be comparably understandable to the [http://www.whatwg.org/specs/web-apps/current-work/#vcard sample vCard4/hCard1 microdata vocabulary]. Also provide any necessary RDFa-specific language as needed. Both preferably in a generic vocabulary-independent way.
* write a porting guide mapping v1 property -> v2 property
** use-case: simple search/replace in templates (e.g. in case web author doesn't remember existing microformats vocabs and where they used them).
** advise using *both* in existing templates (e.g. in case some CSS depends on the existing microformats)
* write a simple tutorial for creating/getting started with microformats-2 markup for new content
 
== combining microformats ==
Since microformats 2 uses simple flat sets of properties for each microformat, multiple microformats are combined to indicate additional structure.
 
=== h-event location h-card ===
Events commonly have venue information with additional structure, like address information. For example:
 
<source lang=html4strict>
<div class="h-event">
  <a class="p-name u-url" href="http://indiewebcamp.com/2012">
    IndieWebCamp 2012
  </a>
  from <time class="dt-start">2012-06-30</time>
  to <time class="dt-end">2012-07-01</time> at
  <span class="p-location h-card">
    <a class="p-name p-org u-url" href="http://geoloqi.com/">
      Geoloqi
    </a>,
    <span class="p-street-address">920 SW 3rd Ave. Suite 400</span>,
    <span class="p-locality">Portland</span>,
    <abbr class="p-region" title="Oregon">OR</abbr>
  </span>
</div>
</source>
 
The nested h-card used to structure the p-location of the h-event is represented as a structured value for "location" in the JSON, which has an additional key, "value" that represents the plain text version parsed from the p-location.
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-event"],
    "properties": {
      "name": ["IndieWebCamp 2012"],
      "url": ["http://indiewebcamp.com/2012"],
      "start": ["2012-06-30"],
      "end": ["2012-07-01"],
      "location": [{
        "value": "Geoloqi, 920 SW 3rd Ave. Suite 400, Portland, OR",
        "type": ["h-card"],
        "properties": {
          "name": ["Geoloqi"],
          "org": ["Geoloqi"],
          "url": ["http://geoloqi.com/"],
          "street-address": ["920 SW 3rd Ave. Suite 400"],
          "locality": ["Portland"],
          "region": ["Oregon"]
        }
      }]
    }
  }]
}
</source>
 
Questions:
<div class="discussion">
* Should the nested hCard be present also as a top-level item in the JSON? - [[User:Tantek|Tantek]] 02:02, 19 June 2012 (UTC)
** My current (2012-243) leaning is no. - [[User:Tantek|Tantek]] 18:53, 30 August 2012 (UTC)
** If so, how do we avoid expansion of the JSON geometrically proportional to the depth of microformat nesting? (Or do we not worry about it?)
* Should there be a canonical hierarchical JSON and a canonical flattened JSON? - [[User:Tantek|Tantek]] 02:02, 19 June 2012 (UTC)
** My current (2012-243) leaning is no, we stick with one canonical JSON for uf2 which is hierarchical. - [[User:Tantek|Tantek]] 18:53, 30 August 2012 (UTC)
** If so, should the flattened JSON have references from properties to nested microformats that have been pushed to the top level per flattening? - [[User:Tantek|Tantek]] 02:02, 19 June 2012 (UTC)
*** If so, what convention does/do JSON follow for such synthetic local reference identifiers? - [[User:Tantek|Tantek]] 02:02, 19 June 2012 (UTC)
</div>
 
Notes:
* The 'location' value reflects the visible text of its element, including spaces and punctuation, as well as the state abbreviation 'OR'. The 'h-card' property values are only what is marked up, and thus include structure values without extra punctuation, and the state takes the expanded form from the <code>title</code> attribute of its <code>&lt;abbr&gt;</code> element.
 
=== h-card org h-card ===
People often publish information general to their company rather than specific to them, in which case, they may wish to encapsulate that in separately nested microformat. E.g. here is a simple h-card example with org property:
 
[http://blog.lizardwrangler.com Mitchell Baker] (Mozilla Foundation)
 
with source:
<source lang=html4strict>
<div class="h-card">
  <a class="p-name u-url"
    href="http://blog.lizardwrangler.com/"
    >Mitchell Baker</a>
  (<span class="p-org">Mozilla Foundation</span>)
</div>
</source>
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "name": ["Mitchell Baker"],
      "url": ["http://blog.lizardwrangler.com/"],
      "org": ["Mozilla Foundation"]
    }
  }]
}
</source>
 
Sometimes such organization affiliations are hyperlinked to the website of the organization:
 
[http://blog.lizardwrangler.com Mitchell Baker] ([http://mozilla.org/ Mozilla Foundation])
 
You can mark that up with a nested h-card:
<source lang=html4strict>
<div class="h-card">
  <a class="p-name u-url"
    href="http://blog.lizardwrangler.com/"
    >Mitchell Baker</a>
  (<a class="p-org h-card"
      href="http://mozilla.org/"
    >Mozilla Foundation</a>)
</div>
</source>
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "name": ["Mitchell Baker"],
      "url": ["http://blog.lizardwrangler.com/"],
      "org": [{
        "value": "Mozilla Foundation",
        "type": ["h-card"],
        "properties": {
          "name": ["Mozilla Foundation"],
          "url": ["http://mozilla.org/"]
        }
      }]
    }
  }]
}
</source>
 
Note: the nested h-card has implied 'name' and 'url' properties, just like any other root-class-name-only h-card on an <code>&lt;a href&gt;</code> would.
 
 
'''FOR PARSERS ONLY:'''
 
The nested 'h-card' could be marked up as an 'h-org' as well, which adds it to the nested microformat's type array, all as part of the property specified by the 'p-org'.
 
<source lang=html4strict>
<div class="h-card">
  <a class="p-name u-url"
    href="http://blog.lizardwrangler.com/"
    >Mitchell Baker</a>
  (<a class="p-org h-card h-org"
      href="http://mozilla.org/"
    >Mozilla Foundation</a>)
</div>
</source>
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "name": ["Mitchell Baker"],
      "url": ["http://blog.lizardwrangler.com/"],
      "org": [{
        "value": "Mozilla Foundation",
        "type": ["h-card", "h-org"],
        "properties": {
          "name": ["Mozilla Foundation"],
          "url": ["http://mozilla.org/"]
        }
      }]
    }
  }]
}
</source>
 
 
'''FOR PARSERS ONLY:'''
 
Without a property class name like 'p-org' holding all the nested objects together, we need to introduce another array for nested children (similar to the existing DOM element notion of children) of a microformat that are not attached to a specific property:
 
<source lang=html4strict>
<div class="h-card">
  <a class="p-name u-url"
    href="http://blog.lizardwrangler.com/"
    >Mitchell Baker</a>
  (<a class="h-org h-card"
      href="http://mozilla.org/"
    >Mozilla Foundation</a>)
</div>
</source>
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "name": ["Mitchell Baker"],
      "url": ["http://blog.lizardwrangler.com/"]
    },
    "children": [{
      "type": ["h-card","h-org"],
      "properties": {
        "name": ["Mozilla Foundation"],
        "url": ["http://mozilla.org/"]
      } 
    }]
  }]
}
</source>
 
Since there's no property class name on the element with classes 'h-card' and 'h-org', the microformat representing that element is collected into the children array.
 
Such a nested microformat implies some relationship (containment, being related), but is not as useful as if the nested microformat was a specific property of its parent.
 
For this reason it's recommended that authors should not publish nested microformats without a  property class name, and instead, when nesting microformats, authors should always specify a property class name (like 'p-org') on the same element as the root class name(s) of the nested microformat(s) (like 'h-card' and/or 'h-org').
 
'''FOR PARSERS ONLY:'''
 
Or the nested object could be only marked up with 'h-card'. Source:
 
<source lang=html4strict>
<div class="h-card">
  <a class="p-name u-url"
    href="http://blog.lizardwrangler.com/"
    >Mitchell Baker</a>
  (<a class="h-card"
      href="http://mozilla.org/"
    >Mozilla Foundation</a>)
</div>
</source>
 
Parsed JSON:
<source lang=javascript>
{
  "items": [{
    "type": ["h-card"],
    "properties": {
      "name": ["Mitchell Baker"],
      "url": ["http://blog.lizardwrangler.com/"]
    },
    "children": [{
      "type": ["h-card"],
      "properties": {
        "name": ["Mozilla Foundation"],
        "url": ["http://mozilla.org/"]
      } 
    }]
  }]
}
</source>
 
'''TO DO: Add h-event h-card example and JSON, per real world publishing examples like [http://www.swingtime.co.uk/List/ClSouth.html Swing Time: Classes in Southern England].'''
 
== authoring ==
=== minimal markup ===
The best way to use microformats-2 is with as little additional markup as possible. This keeps your code cleaner, improves its maintainability, and thus the quality and longevity of your microformats.
 
One big advantage of microformats-2 over previous microformats (and others) is the ability to add one class name to an existing element to create a structured item.
 
See the [[microformats-2#simple_microformats_2_examples|simple examples at the top]] for a start, e.g.
 
Simple hCards work just by adding <code>class="h-card"</code> :
<source lang=html4strict>
<span class="h-card">Frances Berriman</span>
 
<a class="h-card" href="http://benward.me">Ben Ward</a>
 
<img class="h-card" alt="Sally Ride"
    src="http://upload.wikimedia.org/wikipedia/commons/a/a4/Ride-s.jpg"/>
 
<a class="h-card" href="http://tantek.com">
<img alt="Tantek Çelik" src="http://ttk.me/logo.jpg"/>
</a>
</source>
 
* Tip: Inside an open tag, put the <code>class</code> attribute <em>first</em>, then any human text content attributes (e.g. <code>alt</code>), then URL attributes (e.g. <code>href</code> <code>src</code>), and lastly other attributes (e.g. <code>style</code>). Putting the class attribute first ties it closely to the element name/tag itself, makes it more obvious, and thus more likely to be kept up to date.
 
=== backward compatible ===
If you depend on current microformats [[implementations]], while they're being updated to support [[microformats-2]], you can include both existing microformats and microformats-2 markup.
 
In short: use both sets of class names simultaneously.
 
When doing so, use them on the same element, with the microformats-2 class name first, followed immediately by the existing microformats class name.
 
Here are the microformats-2 hCards from above with current [[hCard]] markup as well, which may require adding a wrapping element (e.g. a <code>&lt;span&gt;</code>) to separate the root class name element from explicit property class name elements:
 
<source lang=html4strict>
<span class="h-card vcard">
  <span class="p-name fn">Frances Berriman</span>
</span>
 
<span class="h-card vcard">
  <a class="p-name fn u-url url" href="http://benward.me">Ben Ward</a>
</span>
 
<span class="h-card vcard">
  <img class="p-name fn u-photo photo" alt="Sally Ride"
      src="http://upload.wikimedia.org/wikipedia/commons/a/a4/Ride-s.jpg"/>
</span>
 
<span class="h-card vcard">
  <a class="u-url url" href="http://tantek.com">
    <img class="p-name fn u-photo photo" alt="Tantek Çelik"
        src="http://ttk.me/logo.jpg"/>
  </a>
</span>
</source>
 
 
Tips:
* use the microformats-2 class name first, e.g.
** <code>class="h-card vcard"</code>
** <code>class="u-url url"</code>
* and pair them when using an element for multiple properties, e.g.:
** <code>class="p-name fn u-url url"</code>
** <code>class="p-name fn u-photo photo"</code>
* put microformats classes after classes for CSS (since page authors will likely interact more with their own classes for design than with microformats classes), e.g. as used on individual microformats [[events]] pages:
** <code>class="event-page h-event vevent"</code>
 
The prefixes (h-, p-, etc.) of microformats2 class names provide easier recognition, and when followed by the similarly named existing class name, they're more easily recognized as related and thus kept together when the markup is maintained over time.
 
Related FAQ: [[microformats2-faq#when_using_both_h-card_and_vcard_which_should_be_first_and_why|When using both h-card and vcard which should be first and why?]]
 
== Examples in the wild ==
Please add new examples in the wild of microformats-2 to the top of this list. When it gets too big we can move it to a separate page like [[microformats-2-examples-in-wild]].
 
* ...
* [http://www.w3.org/conf/ W3Conf 2013] uses h-event for the main event, and h-card for all the speakers and notable attendees. The h-cards make particularly good use of implied name, url, and photo properties.
* [http://wordpress.org/extend/themes/sempress SemPress] is a WordPress theme that supports h-card, h-feed/h-entry and h-as-*
* [http://the-pastry-box-project.net/ The Pastry Box Project] use h-card and h-entry markup on their homepage and individual thoughts pages
* Tom Morris uses h-card and [[XFN]] to markup [http://tommorris.org/pages/blogroll his blogroll].
* Aaron Parecki uses h-card to markup both authorship and references to people in his notes permalinks, e.g. [http://aaronparecki.com/2012/230/reply/1 2012/230/reply/1].
* [http://tantek.com/ Tantek Çelik] uses h-card, h-event, and h-entry on his home page, as well as h-entry on all post permalinks, e.g. [http://tantek.com/2012/243/t1/name-beats-title-modern-use-dubline-core-wrong-uf2 2012-243 post], with [[rel-prev]]/[[rel-next]] (if applicable) to indicate prev/next posts, and with [[rel-author]] to his home page with canonical hCard to indicate authorship.
* [http://waterpigs.co.uk/ Barnaby Walters] uses h-card on his home page, h-card, h-entry and XFN markup on his [http://waterpigs.co.uk/notes notes page].
** 2013-01-25 Barnaby Walters: <cite>[http://waterpigs.co.uk/articles/experimental-markup Experimental Markup]</cite> - describes how he's using microformats2 vocabularies: <code>h-adr</code>, <code>h-card</code>, <code>h-entry</code>, <code>h-event</code>, <code>h-geo</code>, <code>h-review</code>, and experimental vocabularies: <code>h-feed</code> (embedded for update histories), [[activity-streams]] objects <code>h-as-article</code>, <code>h-as-collection</code>, <code>h-as-note</code>, <code>h-as-update</code>, as well as experimental properties: <code>u-alternate</code> and <code>u-as-downstream-duplicate</code> (links to POSSE copies), and <code>u-in-reply-to</code> (links to content that the posts are in reply to).
* [http://tantek.com/presentations/2012/06/microformats microformats.org at 7 years] presentation with h-event and h-card markup for people and organizations.
* [http://tantek.com/presentations/2012/06/pdf2012-indieweb.html Rise of the Indie Web hCards] (from Personal Democracy Forum 2012 #pdf12 #pdf2012) has [[microformats-2]] h-calendar and h-card markup
* WebMaker by Mozilla has [[microformats-2]] h-calendar and h-card on event search (e.g. [https://webmaker.org/en-US/events/near/?lat=45.5234515&lng=-122.6762071 search near Portland Oregon]) and event pages (e.g. [https://webmaker.org/en-US/events/192f56eb9/ IndieWebCamp 2012]).[https://twitter.com/microformats/status/212207925643587585]
* WebFWD by Mozilla has [[microformats-2]] h-card markup on [https://webfwd.org/about/experts/ experts] and [https://webfwd.org/about/team/ team] pages
* [http://indiewebcamp.com IndieWebCamp] has [[microformats-2]] h-event markup with nested h-cards for the organizers and the location.
* [https://wiki.mozilla.org/Events Mozilla Events] page has [[microformats-2]] h-event markup with attendees marked up with h-card.
 
== Implementations ==
Parsers and other implementations of microformats2, typically open source:
 
Javascript:
* '''microformat-node''' Node.js microformats2 parser
** github open source: https://github.com/glennjones/microformat-node
** test suite: https://github.com/microformats/tests
** blog post: http://glennjones.net/2013/01/brand-new-microformats-2-parser/
** live: http://microformat2-node.jit.su/
* '''microformat-shiv'''  - cross browser javascript microformats 2 parser which can also be used in browser extensions.
** http://microformatshiv.com/
** github open source: https://github.com/glennjones/microformat-shiv
PHP:
* '''<span id="php-mf2">php-mf2</span>''' - PHP microformats2 parser
** github open source: https://github.com/indieweb/php-mf2
** Packagist: https://packagist.org/packages/mf2/mf2
** live: with textarea entry on: http://waterpigs.co.uk/php-mf2/
Ruby:
* '''G5/microformats2''' Ruby microformats2 parser
** github open source: https://github.com/G5/microformats2
 
== Presentations ==
Presentations about microformats2:
* 2013-01-24 <cite>[http://waterpigs.co.uk/presentations/microformats-2/ Microformats 2]</cite> presentation by [[User:Barnabywalters|Barnaby Walters]] at the [[events/2013-01-24-exeter-web-meetup|Exeter Web Meetup]] in Devon, UK.
* 2012-09-21 <cite>[http://tantek.com/presentations/2012/09/microformats2/ microformats2 &amp; bits of HTML5: The Evolution Of Web Data]</cite> presentation by [[User:Tantek|Tantek Çelik]] ([http://twitter.com/t @t]) at [[events/2012-09-21-refreshlx|RefreshLX]] in Lisbon, Portugal.
* 2012-07-21 <cite>[http://tantek.com/presentations/2012/07/html5-uf2/ HTML5 and microformats2: The Evolution Of Web Data]</cite> presentation by [[User:Tantek|Tantek Çelik]] ([http://twitter.com/t @t]) at [[events/2012-07-21-cascadesf|Innovators of the Web conference]] in San Francisco, CA.
* 2012-07-14 <cite>[http://tantek.com/presentations/2012/07/html5-microformats2/ HTML5 and microformats2: The Evolution Of Web Data]</cite> presentation by [[User:Tantek|Tantek Çelik]] ([http://twitter.com/t @t]) at [[events/2012-07-14-open-web-camp-4|Open Web Camp IV]] in San Jose, CA.
 
== Testimonials ==
* <blockquote class="twitter-tweet">To prove the web standards community can come up with better standards than the SE’s, compare this: http://microformats.org/wiki/microformats-2 with schema . org &mdash; Joost de Valk (@yoast) [https://twitter.com/yoast/status/298907685452124160 2013-02-05 13:35]</blockquote>
* <blockquote class="twitter-tweet">... I’m hoping SE’s will pick up microformats2. It’s SO much cleaner. &mdash; Joost de Valk (@yoast) [https://twitter.com/yoast/status/298911287117758464 2013-02-05 13:49]</blockquote>
* <blockquote class="twitter-tweet">... But damn Microformats2 are sexy. &mdash; Joost de Valk (@yoast) [https://twitter.com/yoast/status/298912179292344320 2013-02-05 13:53]</blockquote>
 
== About This Brainstorm ==
The rest of this page is a brainstorm currently written in narrative / exploratory format, that is, acknowledging the success that microformats have had, why so, and then a walk through of known issues with microformats in general along with iteration of ways to address said issues, ending up with the current microformats 2 design as a conclusion.
 
The proposals build on each other resulting in a solution that addresses the vast majority of general issues. The proposed changes merit a major version number increment, hence microformats 2.
 
This mathematical proof/derivation style is used to explicitly encourage understanding (and double-checking) of the rational steps taken in the development of microformats 2. Reasons are documented, sometimes along with alternatives considered (and reasons for rejection of those alternatives).
 
When the microformats 2 brainstorm has evolved sufficiently to demonstrate some degree of stability, usability, and implementability, it will be rewritten in a more declarative specification style, and this narrative/derivation will be archived to a background development page for historical purposes.
 
— [[User:Tantek|Tantek]]
 
== Background ==
 
2004: In early February microformats were introduced as a concept at eTech, and in September [[hCard]] and [[hCalendar]] were proposed at FOO Camp.
 
2010:
* 34% of webdevs use microformats ([http://www.webdirections.org/sotw10/markup/#semantics 2010 State of Web Development survey])
* 1.88 billion hCards (per [[Yahoo]] SearchMonkey)
* 36 million hCalendar events (ibid)
 
* XFN -> Social Graph API -> Web as Social Network / Address Book
 
== Addressing Issues ==
=== AUTHORS and PUBLISHING ===
Authors and publishers are perhaps the most important constituency in the microformats community. There are more of them than there are developers, programmers, parsers, etc. and they're the ones that solved the chicken-egg problem by publishing microformats even before tools were available for consuming them.
 
Therefore we must first address author/publisher general issues with microformats.
 
==== can we make the simplest case simpler ====
Issue: '''How can we make it easier for authors to publish microformats?'''
 
Currently the simplest hCard:
<source lang=html4strict>
<span class="vcard">
  <span class="fn">
    Chris Messina
  </span>
</span>
</source>
 
requires 2 elements (nested, with perhaps at least one being pre-existing), and 2 class names.
 
Web authors/designers are used to the simplicity of most HTML tags, e.g. to mark up a heading:
 
<source lang=html4strict>
<h1>Chris Messina</h1>
</source>
 
requires just 1 element.
 
[http://zeldman.com/ Jeffrey Zeldman] pointed out this apparent perceived incremental complexity (2 elements vs 1) during a microformats workshop in 2009 in New York City.
 
'''How can we make microformats just as easy?'''
 
'''Proposal: allow root class name only.'''
 
This would enable:
 
<source lang=html4strict>
<h1 class="vcard">Chris Messina</h1>
</source>
 
requiring only 1 class name for the simplest case.
 
 
==== renaming for usability ====
Otherwise known as, choosing one form of consistency over another.
 
'''Can we do even better?'''
 
One of the most common questions asked about hCard is:
 
[[hcard-faq#Why_does_hCard_use_vcard_as_the_root_class_name|Why does hCard use vcard as the root class name?]]
 
This slight inconsistency between the name of the format and the name of the root class name consistently causes confusion in a large percentage of newcomers to microformats.
* See [[issues#hcard-vs-vcard-name]] for details/links.
 
Though in microformats we believe very strongly in the [[principle]] of [[reuse]], we have to admit that in this case experience/evidence has shown that this may be a case where we re-used something too far beyond it's original meaning. Thus:
 
'''Proposal: use root class name "hcard" instead of "vcard" for future hCards.'''
 
This would result in:
 
<source lang=html4strict>
<h1 class="hcard">Chris Messina</h1>
</source>
 
making the simple case even simpler:
 
Just 1 additional class name, named the same as the format you're adding.  Think hCard, markup class="hcard".
 
At a minimum for compatibility we should document that parsers should accept "hcard" as an alternative to "vcard" as the root class name for hCard 1.0, and similarly for hCalendar 1.0: "hcalendar" in addition to "vcalendar", "hevent" in addition to "vevent".
 
However, for [[microformats-2]] we are going to distinguish root class names further by using an "h-" prefix (e.g. "h-card"). Read on to understand why.
 
==== simplifying to only needing one element ====
It's very important for the simple case to be as simple as possible, to enable the maximum number of people to get started with minimum effort. (The idea of using a single class name for a microformat was proposed by Ryan Cannon in 2006 specifically [[hcard-implied|for hCard]], and rediscovered by [[User:Tantek|Tantek]] in 2010 and subsequently generalized to all microformats.)
 
From there on, it's ok to require incremental effort for incremental return.
 
E.g. to add any additional information about a person, add explicit property names.
 
'''How does this simple root-only case work?'''
 
* root class name reflects name of the microformat
* every microformat must require at most 1 property (preferably 0)
** admit that requiring a field in an application just results in noise (the 90210 problem - apps which require zip code get lots of false 90210 entries), and specify that any application use cases which appear to "require" specific properties must instead define how to imply sensible defaults for them.
* when only a root class name is specified, imply the entire text contents of the element as the value of the primary property of the microformat. e.g.
** "hcard" implies "fn"
** hcalendar event - "hevent" - implies "summary"
** "hreview" implies "summary"
** "hentry" implies "entry-summary" (perhaps collapse into "summary" - in practice they're not sufficiently semantically distinct to require separate property names)
** '''OR''' instead of making the one implied property be vocabulary specific, introduce a new generic (applicable to all vocabularies) 'p-name' property (subsuming hCard's 'fn'). See [[microformats-2-brainstorming#further_simplifications|microformats 2 brainstorming: further simplifications]] for latest thoughts along these lines, including the following specific mark-up implied generic properties across all microformats (based on existing published markup use-cases)
*** 'p-name'
*** 'u-url'
*** 'u-photo'
 
==== flat sets of properties ====
'''What more can we simplify about microformats?'''
 
Numerous individuals have provided the feedback that whenever there is more than one level of hierarchy in a microformat, many (most?) developers get confused - in particular Kavi Goel of Google / Rich Snippets provided this feedback at a microformats dinner.  Thus depending on multiple levels of hierarchy is likely resulting in a loss of authorability, perhaps even accuracy as confusion undoubtedly leads to more errors. Thus:
 
'''Proposal: simplify all microformats to flat sets of properties. '''
 
What this means:
* all microformats are simply an object with a set of properties with values.
* no more subproperties- drop the notion of subproperties.
* use composition of multiple microformats for any further hierarchy, e.g. the "location" of an hCalendar event can be an hCard, or the "agent" of one hCard can be another hCard.
 
For example for hCard this would mean the following specific changes to keep relevant functionality:
* drop "n", promote all "n" subproperties to full properties
** given-name, family-name, additional-name, honorific-prefix, honorific-suffix
* treat "geo" as a nested microformat
* treat "adr" as a nested microformat (what to do about adr's "type"?)
* treat "org" as a flat string and drop "organization-name" and "organization-unit" (in practice rarely used, also not revealed or ignored in contact management user interfaces - e.g. Address Book)
 
Example: add a middle initial to the previous example Chris Messina's name, and markup each name component:
 
<source lang=html4strict>
<h1 class="hcard">
<span class="fn">
  <span class="given-name">Chris</span>
  <abbr class="additional-name">R.</abbr>
  <span class="family-name">Messina</span>
</span>
</h1>
</source>
 
Note:
# use of an explicit span with "fn" to markup his entire formatted name
# use of the abbr element to explicitly indicate the semantic that "R." is merely an abbreviation for his additional-name.
 
==== distinguishing properties from other classes ====
Current microformats properties re-use generic terms like "summary", "photo", "updated" both for ease of use and understanding.
 
However, through longer term experience, we've seen sites that accidentally drop (or break) their microformats support (e.g. Upcoming.org, Facebook) because web authors sometimes rewrite all their class names, and either are unaware that microformats were in the page, or couldn't easily distinguish microformats property class names from other site-specific class names.
 
This issue has been reported by a number of web authors.
* See: [[issues#class-collisions]]
 
Thus microformats 2 uses ''prefixes'' for property class names, e.g.:
* '''p-summary''' instead of ''summary''
* '''u-photo''' instead of ''photo''
* '''dt-updated''' instead of ''updated''
 
Such prefixing of all microformats class names was first suggested by Scott Isaacs of Microsoft to Tantek on a visit to Microsoft sometime in 2006/2007, but specifically aimed at making microformats easier to parse. At the time the suggestion was rejected since microformats were focused on web authors rather than parsers.
 
However, since experience has shown that distinguishing property class names is an issue for '''both web authors and parser developers''', this is a key change that microformats 2 is adopting. See the next section for details.
 
=== COMMUNITY and TOOLS ===
The second most important constituency in the microformats community are the developers, programmers, tool-makers.
 
A non-trivial number of them have been sufficiently frustrated with some general issues with microformats that they've done the significant extra work to support very different and less friendly alternatives (microdata, RDFa). Based on this real-world data (market behavior), it behooves us to address these general issues with microformats for this constituency.
 
==== existing microformats parsing requirements ====
COMMUNITY and TOOLS (that) USE MICROFORMATS
* parser / parsing
* structured
* getting the data out
* json - 1:1 mapping
 
[[parsing]] microformats currently requires
# a list of root class names of each microformat to be parsed
# a list of properties for each specific microformats, along with knowledge of the type of each property in order to parse their data from potentially different portions of the HTML markup
# some number of format-specific specific rules (markup/content optimizations)
 
This has meant that whenever a new microformat is drafted/specificied/adopted, parsers need to updated to handle it correctly, at a minimum to parse them when inside other microformats and avoid errantly implying properties from one to the other (containment, [[mfo]] problem).
 
==== naming conventions for generic parsing ====
I think there is a fairly simple solution to #1 and #2 from the above list, and we can make progress towards minimizing #3.  In short:
 
'''Proposal: a set of naming conventions for microformat root class names and properties that make it obvious when:'''
* a class name represents a microformat root class name
* a class name represents a microformat property name
* a class name represents a microformat property that needs special parsing (specific type of property).
 
In particular - derived from the real world examples of existing proven microformats (rather than any abstraction of what a schema should have)
* '''"h-*" for root class names''', e.g. "h-card", "h-event", "h-entry"
** The 'h-' prefix is based on the existing microformats naming pattern of starting with 'h'.
* '''"p-*" for simple (text) properties''', e.g. "p-fn", "p-summary"
** vocabulary generic parsing, element text in general, treat certain HTML element/attribute combination as special and use those first, e.g. img/alt, abbr/title.
** The 'p-' prefix is based on the word "property" starting with 'p'.
* '''"u-*" for URL properties''', e.g. "u-url", "u-photo", "u-logo"
** special parsing required: prefer a/href, img/src, object/data etc. attributes to element contents.
** The 'u-' prefix is based on URL/URI starting with the letter 'u', which is the type of most of these related properties.
* '''"dt-*" for datetime properties''', e.g. "dt-start", "dt-end", "dt-bday"
** special parsing required: [[value-class-pattern]], in particular separate date time value parsing for better human readabillity / DRY balance.
** The 'dt-' prefix is based on "date time" having the initials "dt" and the preponderance of existing date time properties starting with "dt", e.g. dtstart, dtend, dtstamp, dtreviewed.
* '''"e-*" for element tree properties''' where the entire contained element hierarchy is the value, e.g. "e-content" (formerly "entry-content") for [[hAtom]]. The 'e-' prefix can also be mnemonically remembered as "element tree", "embedded markup", or "encapsulated markup".
** special parsing required: follow the [http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#serializing-html-fragments HTML spec: Serializing HTML Fragments algorithm] to create a serialization.
 
This provides a simpler transition/education story for existing microformats authors/publishers:
* "h*" to "h-*", "dt*" to "dt-*", url-like properties to "u-*", entire embedded markup to "e-*", and "p-*" for all "plain text" properties.
 
See [[microformats-2-prefixes]] for further thoughts and discussions on these and other class prefixes.
 
Example: taking that simple heading hCard example forward:
 
<source lang=html4strict>
<h1 class="h-card">Chris Messina</h1>
</source>
 
As part of microformats 2 we would immediately define root class names and property names for all existing microformats and drafts consistent with this naming convention, and require support thereof from all new implementations, as well as strongly encouraging existing implementations to adopt the simplified microformats 2 syntax and mechanism. Question: which microformats deserve explicit backward compatibility?
 
As a community we would continue to use the microformats [[process]] both for researching and determining the need for new microformats, and for naming new microformat property names for maximum re-use and interoperability of a shared vocabulary.
 
If it turns out we need a new property type in the future, we can use one of the remaining single-letter-prefixes to add it to microformats 2. This would require updating of parsers of course, but in practice the number of different types of properties has grown very slowly, and we know from other schema/programming languages that there's always some small limited number of scalar/atomic property types that you need, and using those you can create compound types/objects that represent richer / more complicated types of data. See [[microformats-2-prefixes]] for documentation of existing single-letter class name prefixes in practice.
 
=== ADVANTAGES ===
This has numerous advantages:
* '''better maintainability''' - much more obvious to web authors/designers/publishers which class names are for/from microformats.
* '''no chance of collision''' - for all practical purposes with existing class names and thus avoiding any need to add more complex CSS style rules to prevent unintended styling effects.
* '''simpler parsing''' - parsers can now do a simple stream-parse (or in-order DOM tree walk) and parse out '''all''' microformat objects, properties, and values, without having to know anything about any specific microformats.
* '''separation of syntax and vocabulary''' - by abstracting microformats 2 syntax independent of any vocabulary, it allows and encourages development of shared vocabularies  that can work in alternative syntaxes.
 
More examples: here is that same heading example with name components:
 
<source lang=html4strict>
<h1 class="h-card">
<span class="p-fn">
  <span class="p-given-name">Chris</span>
  <abbr class="p-additional-name">R.</abbr>
  <span class="p-family-name">Messina</span>
</span>
</h1>
</source>
 
with a hyperlink to Chris's URL:
 
<source lang=html4strict>
<h1 class="h-card">
<a class="p-fn u-url" href="http://factoryjoe.com/">
  <span class="p-given-name">Chris</span>
  <abbr class="p-additional-name">R.</abbr>
  <span class="p-family-name">Messina</span>
</a>
</h1>
</source>
 
=== COMPATIBILITY ===
 
microformats 2 is backwards compatible in that in permits content authors to markup with both old and new class names for compatibility with old tools.
 
Here is a simple example:
 
<source lang=html4strict>
<h1 class="h-card vcard">
<span class="fn">Chris Messina</span>
</h1>
</source>
 
a microformats 2 parser would see the class name "h-card" and imply the one required property from the contents, while a microformats 1.0 parser would find the class name "vcard" and then look for the class name "fn". no data duplication is required. this is a very important continuing application of the <abbr title="don't repeat yourself">DRY</abbr> [[principle]].
 
And the above hyperlinked example with both sets of class names:
 
<source lang=html4strict>
<h1 class="h-card vcard">
<a class="p-fn u-url n fn url" href="http://factoryjoe.com/">
  <span class="p-given-name given-name">Chris</span>
  <abbr class="p-additional-name additional-name">R.</abbr>
  <span class="p-family-name family-name">Messina</span>
</a>
</h1>
</source>
 
 
=== VENDOR EXTENSIONS ===
 
(this section was only discussed verbally and not written up during discussions - capturing here as it is topical)
 
Proprietary extensions to formats have typically been shortlived experimental failures with one big recent exception.
 
Proprietary or experimental CSS3 property implementations have been very successful.
 
There has been much use of border radius properties and animations/transitions which use CSS properties with vendor-specific prefixes like:
 
* -moz-border-radius
* -webkit-border-radius
 
etc.
 
Note that these are merely string '''prefixes''', not bound to any URL, and thus not namespaces in any practical sense of the word.  This is quite an important distinction, as avoiding the need to bind to a URL has made them easier to support and use.
 
This use of vendor specific CSS properties has in recent years allowed the larger web design/development/implementor communities to experiment and iterate on new CSS features while the features were being developed and standardized.
 
The benefits have been two-fold:
* designers have been able to make more attractive sites sooner (at least in some browsers)
* features have been market / real-world tested before being fully standardized, thus resulting in better features
 
Implementers have used/introduced "x-" prefixes for IETF MIME/content-types for experimental content-types, MIME parameter extensions, and HTTP header extensions, per RFC 2045 Section 6.3, RFC 3798 section 3.3, and [https://secure.wikimedia.org/wikipedia/en/wiki/List_of_HTTP_header_fields#Common_non-standard_headers Wikipedia: HTTP header fields - non-standard headers] (could use RFC reference instead) respectively, like:
 
* application/x-latex (per [https://secure.wikimedia.org/wikipedia/en/wiki/Internet_media_type#Type_x Wikipedia Internet media type: Type x])
* x-spam-score (in email headers)
* X-Pingback (per [http://en.wikipedia.org/wiki/Pingback Wikipedia:Pingback])
 
Some standard types started as experimental "x-" types, thus demonstrating this experiment first, standardize later approach has worked for at least some cases:
 
* image/x-png (standardized as image/png, both per [http://tools.ietf.org/html/rfc2083 RFC2083])
 
There have been times when specific sites have wanted to extend microformats beyond what the set of properties in the microformat, and currently lack any '''experimental''' way to do so - to try and see if a feature (or even a whole format) is interesting in the real world before bothering to pursue researching and walking it through the microformats process.  Thus:
 
'''Proposal:'''
* '*-x-' + '-' + meaningful name for root and property class names
** where "*" indicates the single-character-prefix as defined above
** where "x" indicates a literal 'x' for an experimental extension OR
** OR "x" indicates a vendor prefix (more than one character, e.g. like CSS vendor extension abbreviations, or some stock symbols, avoiding first words/phrases/abbreviations of microformats properties like dt-)
** e.g.
** "h-bigco-one-ring" - a hypothetical "bigco" vendor-specific "one-ring" microformat root class name.
** "p-goog-preptime" - to represent [http://www.google.com/support/webmasters/bin/answer.py?answer=173379 Google's "preptime" property extension] to [[hRecipe]] (aside: "duration" may be another property type to consider separate from "datetime" as it may be subject to different parsing rules.)
** "p-x-prep-time" - a possible experimental property name to be added to hRecipe upon consideration/documentation of real-world usage/uptake.
 
Background - this proposal is a composition of the following (at least somewhat) successful vendor extension syntaxes
* [http://www.w3.org/TR/CSS21/syndata.html#vendor-keywords CSS 2.1 4.1.2.1 Vendor-specific extensions]
* IETF MIME/content-type "x-*" extensions per RFC 2045 Section 6.3. [http://en.wikipedia.org/wiki/Internet_media_type]
* IETF MIME experimental fields (e.g. x-spam-score)
* HTTP header extensions (e.g. x-pingback)
* note also [http://www.mnot.net/blog/2009/02/18/x- some critical thoughts from mnot]
 
=== USERS ===
Need more tools and interfaces that:
* publish
* copy/paste
* right-click on a microformat
* share
* search results
 
discussed some existing like: [[H2VX]] converts hCard to vCard, hCalendar to iCalendar
 
how would we re-implement Live Clipboard today, making it easier for publishers and developers?
 
=== SEE ALSO ===
* [[microformats2]]
* [[microformats2-brainstorming]] - moving more experimental / undeveloped / and rejected thoughts ideas here to simplify/progress *this* page further.
* [[microformats2-prefixes]]
* [[microformats2-faq]]
* [[microformats2-parsing]]

Revision as of 02:43, 7 April 2013

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