⚠️ Важно: данный сайт не имеет отношения к владельцам schema.org, это всего лишь любительский (неофициальный) перевод. Сайт сделан для тех, кто плохо воспринимает технический английский. Оригинал текста можно найти тут: schema.org/accessibilityFeature.

accessibilityFeature

Свойство schema.org ?

Описание:

Содержательные особенности ресурса, такие как доступные медиа, альтернативы и поддерживаемые улучшения для доступности. Значения должны быть взяты из утвержденного словаря.

Свойство accessibilityFeature в Schema.org используется для описания различных характеристик контента, которые делают его более доступным для людей с ограниченными возможностями. Это может включать в себя такие элементы, как доступные медиаформаты, альтернативные способы представления информации и поддерживаемые улучшения для обеспечения доступности.

Это свойство помогает разработчикам и владельцам контента четко обозначить, какие доступные функции присутствуют в их ресурсах. Например, если у веб-сайта есть текстовые альтернативы для изображений или возможность изменения размера шрифта, это может быть указано с помощью accessibilityFeature.

Использование этого свойства важно для улучшения доступности веб-контента, так как оно позволяет пользователям и поисковым системам понимать, какие особенности доступны. Это, в свою очередь, способствует созданию более инклюзивной среды, где люди с разными потребностями могут легче получать доступ к информации и услугам.

Значения для свойства accessibilityFeature должны быть выбраны из утвержденного словаря, что обеспечивает стандартизацию и согласованность в описании доступных функций. Это делает информацию более понятной и полезной как для пользователей, так и для разработчиков.

Ожидается, что значения будут одного из этих типов

Используется в этих типах

Примеры

Пример 1

Пример заметки или HTML разметки.


<div>
   <dl>
      <dt>Name:</dt>
      <dd>Holt Physical Science</dd>
      <dt>Brief Synopsis:</dt>
      <dd>NIMAC-sourced textbook</dd>
      <dt>Long Synopsis:</dt>
      <dd>N/A</dd>
      <dt>Book Quality:</dt>
      <dd>Publisher Quality</dd>
      <dt>Book Size:</dt>
      <dd>598 Pages</dd>
      <dt>ISBN-13:</dt>
      <dd>9780030426599</dd>
      <dt>Publisher:</dt>
      <dd >Holt, Rinehart and Winston</dd>
      <dt>Date of Addition:</dt>
      <dd>06/08/10</dd>
      <dt>Copyright Date:</dt>
      <dd>2007</dd>
      <dt>Copyrighted By:</dt>
      <dd>Holt, Rinehart and Winston</dd>
      <dt>Adult content:</dt>
      <dd>No</dd>
      <dt>Language:</dt>
      <dd>English US</dd>
      <dt>Essential Images:</dt>
      <dd>861</dd>
      <dt>Described Images:</dt>
      <dd>910</dd>
      <dt>Categories:</dt>
      <dd>Educational Materials</dd>
      <dt>Grade Levels:</dt>
      <dd>Sixth grade, Seventh grade, Eighth grade</dd>
      <dt>Submitted By:</dt>
      <dd>Bookshare Staff</dd>
      <dt>NIMAC:</dt>
      <dd>This book is currently only available to public K-12 schools and organizations in the
      United States for use with students with an IEP, because it was created from files
      supplied by the NIMAC under these restrictions. Learn more in the NIMAC Support Center.</dd>
   </dl>
   <div class="bookReviews">
      <h2>Reviews of Holt Physical Science (0 reviews)</h2>
      <div class="bookReviewScore">
         <span>0 - No Rating Yet</span>
      </div>
   </div>
</div>

Пример, закодированный в формате Microdata, встроенный в HTML.


<p>
This example shows the addition of Accessibility metadata. Although these properties are not
a formal enumeration, there is evolving consensus amongst accessibility experts for
appropriate values for these properties. This example shows simple text values,
as suggested by www.a11ymetadata.org.
</p>

<div itemscope="" itemtype="https://schema.org/Book">
   <meta itemprop="bookFormat" content="EBook/DAISY3"/>
   <meta itemprop="accessibilityFeature" content="largePrint/CSSEnabled"/>
   <meta itemprop="accessibilityFeature" content="highContrast/CSSEnabled"/>
   <meta itemprop="accessibilityFeature" content="resizeText/CSSEnabled"/>
   <meta itemprop="accessibilityFeature" content="displayTransformability"/>
   <meta itemprop="accessibilityFeature" content="longDescription"/>
   <meta itemprop="accessibilityFeature" content="alternativeText"/>
   <meta itemprop="accessibilityControl" content="fullKeyboardControl"/>
   <meta itemprop="accessibilityControl" content="fullMouseControl"/>
   <meta itemprop="accessibilityHazard" content="noFlashingHazard"/>
   <meta itemprop="accessibilityHazard" content="noMotionSimulationHazard"/>
   <meta itemprop="accessibilityHazard" content="noSoundHazard"/>
   <meta itemprop="accessibilityAPI" content="ARIA"/>

   <dl>
      <dt>Name:</dt>
      <dd itemprop="name">Holt Physical Science</dd>
      <dt>Brief Synopsis:</dt>
      <dd itemprop="description">NIMAC-sourced textbook</dd>
      <dt>Long Synopsis:</dt>
      <dd>N/A</dd>
      <dt>Book Quality:</dt>
      <dd>Publisher Quality</dd>
      <dt>Book Size:</dt>
      <dd><span itemprop="numberOfPages">598</span> Pages</dd>
      <dt>ISBN-13:</dt>
      <dd itemprop="isbn">9780030426599</dd>
      <dt>Publisher:</dt>
      <dd itemprop="publisher" itemtype="https://schema.org/Organization" itemscope=""><span itemprop="name">Holt, Rinehart and Winston</span></dd>
      <dt>Date of Addition:</dt>
      <dd>06/08/10</dd>
      <dt>Copyright Date:</dt>
      <dd itemprop="copyrightYear">2007</dd>
      <dt>Copyrighted By:</dt>
      <dd itemprop="copyrightHolder" itemtype="https://schema.org/Organization" itemscope=""><span itemprop="name">Holt, Rinehart and Winston</span></dd>
      <dt>Adult content:</dt>
      <dd><meta itemprop="isFamilyFriendly" content="true"/>No</dd>
      <dt>Language:</dt>
      <dd><meta itemprop="inLanguage" content="en-US"/>English US</dd>
      <dt>Essential Images:</dt>
      <dd>861</dd>
      <dt>Described Images:</dt>
      <dd>910</dd>
      <dt>Categories:</dt>
      <dd><span itemprop="genre">Educational Materials</span></dd>
      <dt>Grade Levels:</dt>
      <dd>Sixth grade, Seventh grade, Eighth grade</dd>
      <dt>Submitted By:</dt>
      <dd>Bookshare Staff</dd>
      <dt>NIMAC:</dt>
      <dd>This book is currently only available to public K-12 schools and organizations in the
      United States for use with students with an IEP, because it was created from files
      supplied by the NIMAC under these restrictions. Learn more in the NIMAC Support Center.</dd>
   </dl>

   <div class="bookReviews" itemprop="aggregateRating" itemscope itemtype="https://schema.org/AggregateRating">
      <h2>Reviews of Holt Physical Science (<span itemprop="reviewCount">0</span> reviews)</h2>

      <div class="bookReviewScore">
         <span><span itemprop="ratingValue">0</span> - No Rating Yet</span>
      </div>
   </div>
</div>

Пример, закодированный в формате RDFa, встроенный в HTML.


<p>
This example shows the addition of Accessibility metadata. Although these properties are not
a formal enumeration, there is evolving consensus amongst accessibility experts for
appropriate values for these properties. This example shows simple text values,
as suggested by www.a11ymetadata.org.
</p>

<div vocab="https://schema.org/" typeof="Book">
   <meta property="bookFormat" content="EBook/DAISY3"/>
   <meta property="accessibilityFeature" content="largePrint/CSSEnabled"/>
   <meta property="accessibilityFeature" content="highContrast/CSSEnabled"/>
   <meta property="accessibilityFeature" content="resizeText/CSSEnabled"/>
   <meta property="accessibilityFeature" content="displayTransformability"/>
   <meta property="accessibilityFeature" content="longDescription"/>
   <meta property="accessibilityFeature" content="alternativeText"/>
   <meta property="accessibilityControl" content="fullKeyboardControl"/>
   <meta property="accessibilityControl" content="fullMouseControl"/>
   <meta property="accessibilityHazard" content="noFlashingHazard"/>
   <meta property="accessibilityHazard" content="noMotionSimulationHazard"/>
   <meta property="accessibilityHazard" content="noSoundHazard"/>
   <meta property="accessibilityAPI" content="ARIA"/>

   <dl>
      <dt>Name:</dt>
      <dd property="name">Holt Physical Science</dd>
      <dt>Brief Synopsis:</dt>
      <dd property="description">NIMAC-sourced textbook</dd>
      <dt>Long Synopsis:</dt>
      <dd>N/A</dd>
      <dt>Book Quality:</dt>
      <dd>Publisher Quality</dd>
      <dt>Book Size:</dt>
      <dd><span property="numberOfPages">598</span> Pages</dd>
      <dt>ISBN-13:</dt>
      <dd property="isbn">9780030426599</dd>
      <dt>Publisher:</dt>
      <dd property="publisher" typeof="Organization"><span property="name">Holt, Rinehart and Winston</span></dd>
      <dt>Date of Addition:</dt>
      <dd>06/08/10</dd>
      <dt>Copyright Date:</dt>
      <dd property="copyrightYear">2007</dd>
      <dt>Copyrighted By:</dt>
      <dd property="copyrightHolder" typeof="Organization"><span property="name">Holt, Rinehart and Winston</span></dd>
      <dt>Adult content:</dt>
      <dd><meta property="isFamilyFriendly" content="true"/>No</dd>
      <dt>Language:</dt>
      <dd><meta property="inLanguage" content="en-US"/>English US</dd>
      <dt>Essential Images:</dt>
      <dd>861</dd>
      <dt>Described Images:</dt>
      <dd>910</dd>
      <dt>Categories:</dt>
      <dd><span property="genre">Educational Materials</span></dd>
      <dt>Grade Levels:</dt>
      <dd>Sixth grade, Seventh grade, Eighth grade</dd>
      <dt>Submitted By:</dt>
      <dd>Bookshare Staff</dd>
      <dt>NIMAC:</dt>
      <dd>This book is currently only available to public K-12 schools and organizations in the
      United States for use with students with an IEP, because it was created from files
      supplied by the NIMAC under these restrictions. Learn more in the NIMAC Support Center.</dd>
   </dl>

   <div class="bookReviews" property="aggregateRating" typeof="AggregateRating">
      <h2>Reviews of Holt Physical Science (<span property="reviewCount">0</span> reviews)</h2>

      <div class="bookReviewScore">
         <span><span property="ratingValue">0</span> - No Rating Yet</span>
      </div>
   </div>
</div>

Пример, закодированный в формате JSON-LD в теге <script> HTML.


<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Book",
  "accessibilityAPI": "ARIA",
  "accessibilityControl": [
    "fullKeyboardControl",
    "fullMouseControl"
  ],
  "accessibilityFeature": [
    "largePrint/CSSEnabled",
    "highContrast/CSSEnabled",
    "resizeText/CSSEnabled",
    "displayTransformability",
    "longDescription",
    "alternativeText"
  ],
  "accessibilityHazard": [
    "noFlashingHazard",
    "noMotionSimulationHazard",
    "noSoundHazard"
  ],
  "aggregateRating": {
    "@type": "AggregateRating",
    "reviewCount": "0"
  },
  "bookFormat": "EBook/DAISY3",
  "copyrightHolder": {
    "@type": "Organization",
    "name": "Holt, Rinehart and Winston"
  },
  "copyrightYear": "2007",
  "description": "NIMAC-sourced textbook",
  "genre": "Educational Materials",
  "inLanguage": "en-US",
  "isFamilyFriendly": "true",
  "isbn": "9780030426599",
  "name": "Holt Physical Science",
  "numberOfPages": "598",
  "publisher": {
    "@type": "Organization",
    "name": "Holt, Rinehart and Winston"
  }
}
</script>

Структурированное представление примера JSON-LD.

@context
https://schema.org
@type
Book
accessibilityAPI
ARIA
accessibilityControl
0
fullKeyboardControl
1
fullMouseControl
accessibilityFeature
0
largePrint/CSSEnabled
1
highContrast/CSSEnabled
2
resizeText/CSSEnabled
3
displayTransformability
4
longDescription
5
alternativeText
accessibilityHazard
0
noFlashingHazard
1
noMotionSimulationHazard
2
noSoundHazard
aggregateRating
@type
AggregateRating
reviewCount
0
bookFormat
EBook/DAISY3
copyrightHolder
@type
Organization
name
Holt, Rinehart and Winston
copyrightYear
2007
description
NIMAC-sourced textbook
genre
Educational Materials
inLanguage
en-US
isFamilyFriendly
true
isbn
9780030426599
name
Holt Physical Science
numberOfPages
598
publisher
@type
Organization
name
Holt, Rinehart and Winston

Пример 2

Пример заметки или HTML разметки.


A graphic novel book example.

See also https://github.com/daisy/epub-revision-a11y/wiki/ePub-3.1-Accessibility--Proposal-To-Schema.org

Пример, закодированный в формате JSON-LD в теге <script> HTML.


<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "Book",
  "name": "Some graphic novel",
  "accessMode": ["textual", "visual"],
  "accessModeSufficient": [
    {
      "@type": "ItemList",
      "itemListElement": ["textual", "visual"],
      "description": "Text and images"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["textual"],
      "description": "Text with textual alternatives and descriptions for images"
    }
  ],
  "accessibilitySummary": "Visual elements are not described."
}
</script>

Структурированное представление примера JSON-LD.

@context
https://schema.org/
@type
Book
name
Some graphic novel
accessMode
0
textual
1
visual
accessModeSufficient
0
@type
ItemList
itemListElement
0
textual
1
visual
description
Text and images
1
@type
ItemList
itemListElement
0
textual
description
Text with textual alternatives and descriptions for images
accessibilitySummary
Visual elements are not described.

Пример 3

Пример заметки или HTML разметки.


A second example.

See also https://github.com/daisy/epub-revision-a11y/wiki/ePub-3.1-Accessibility--Proposal-To-Schema.org

Пример, закодированный в формате JSON-LD в теге <script> HTML.


{
  "@context": "https://schema.org/",
  "@type": "Movie",
  "accessMode": ["auditory", "visual"],
  "accessibilityFeature": ["audioDescription", "captions"],
  "accessModeSufficient": [
    {
      "@type": "ItemList",
      "itemListElement": ["textual", "visual"],
      "description": "Closed captioning"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["auditory"],
      "description": "Audio description"
    }
  ],
  "accessibilitySummary": "Captions provided in English; short scenes in French have English subtitles instead."
}

Структурированное представление примера JSON-LD.

@context
https://schema.org/
@type
Movie
accessMode
0
auditory
1
visual
accessibilityFeature
0
audioDescription
1
captions
accessModeSufficient
0
@type
ItemList
itemListElement
0
textual
1
visual
description
Closed captioning
1
@type
ItemList
itemListElement
0
auditory
description
Audio description
accessibilitySummary
Captions provided in English; short scenes in French have English subtitles instead.

Пример 4

Пример заметки или HTML разметки.


A third example.

See also https://github.com/daisy/epub-revision-a11y/wiki/ePub-3.1-Accessibility--Proposal-To-Schema.org

Пример, закодированный в формате JSON-LD в теге <script> HTML.


{
  "@context": "https://schema.org/",
  "@type": "Book",
  "name": "Alice in Wonderland",
  "accessMode": ["auditory", "textual", "visual"],
  "accessibilityFeature": ["alternativeText", "synchronizedAudioText"],
  "accessModeSufficient": [
    {
      "@type": "ItemList",
      "itemListElement": ["textual"],
      "description": "See the text"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["textual", "visual"],
      "description": "See the text and images"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["auditory"],
      "description": "Hear the text and image descriptions"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["auditory", "visual"],
      "description": "Hear the text and see the images"
    },
    {
      "@type": "ItemList",
      "itemListElement": ["auditory", "visual", "textual"],
      "description": "Hear the text and see the text and images"
    }
  ],
  "accessibilitySummary": "Short descriptions are provided; long descriptions of the images are not needed for most readers."
}

Структурированное представление примера JSON-LD.

@context
https://schema.org/
@type
Book
name
Alice in Wonderland
accessMode
0
auditory
1
textual
2
visual
accessibilityFeature
0
alternativeText
1
synchronizedAudioText
accessModeSufficient
0
@type
ItemList
itemListElement
0
textual
description
See the text
1
@type
ItemList
itemListElement
0
textual
1
visual
description
See the text and images
2
@type
ItemList
itemListElement
0
auditory
description
Hear the text and image descriptions
3
@type
ItemList
itemListElement
0
auditory
1
visual
description
Hear the text and see the images
4
@type
ItemList
itemListElement
0
auditory
1
visual
2
textual
description
Hear the text and see the text and images
accessibilitySummary
Short descriptions are provided; long descriptions of the images are not needed for most readers.

Пример 5

Пример заметки или HTML разметки.


[A basic presentation in HTML]

Пример, закодированный в формате Microdata, встроенный в HTML.


<main itemscope itemtype="https://schema.org/CreativeWork">
   <meta itemprop="accessibilityHazard" content="FlashingHazard"/>
   <meta itemprop="accessibilityHazard" content="noMotionSimulationHazard"/>
   <meta itemprop="accessibilityHazard" content="noSoundHazard"/>
   <meta itemprop="accessibilityFeature" content="longDescription"/>
   <meta itemprop="accessibilityFeature" content="alternativeText"/>
   <meta itemprop="encodingFormat" content="text/html"/>
   <meta itemprop="encodingFormat" content="image/png"/>
   <meta itemprop="encodingFormat" content="text/css"/>
   <meta itemprop="encodingFormat" content="text/javascript"/>
   <meta itemprop="accessibilityAPI" content="ARIA"/>
   <meta itemprop="accessibilityAPI" content="UIA"/>
   <meta itemprop="accessibilityControl" content="fullKeyboardControl"/>
   <meta itemprop="accessibilityControl" content="fullKeyboardControl"/>
   <meta itemprop="accessibilityControl" content="fullKeyboardControl"/>
   <meta itemprop="accessibilityControl" content="fullMouseControl"/>
 <!--...slide content...-->
</main>

Пример, закодированный в формате RDFa, встроенный в HTML.


<div vocab="https://schema.org/" typeof="CreativeWork">
   <meta property="accessibilityHazard" content="FlashingHazard"/>
   <meta property="accessibilityHazard" content="noMotionSimulationHazard"/>
   <meta property="accessibilityHazard" content="noSoundHazard"/>
   <meta property="accessibilityFeature" content="longDescription"/>
   <meta property="accessibilityFeature" content="alternativeText"/>
   <meta property="encodingFormat" content="text/html"/>
   <meta property="encodingFormat" content="image/png"/>
   <meta property="encodingFormat" content="text/css"/>
   <meta property="encodingFormat" content="text/javascript"/>
   <meta property="accessibilityAPI" content="ARIA"/>
   <meta property="accessibilityAPI" content="UIA"/>
   <meta property="accessibilityControl" content="fullKeyboardControl"/>
   <meta property="accessibilityControl" content="fullKeyboardControl"/>
   <meta property="accessibilityControl" content="fullKeyboardControl"/>
   <meta property="accessibilityControl" content="fullMouseControl"/>
 <!--...slide content...-->
</div>

Пример, закодированный в формате JSON-LD в теге <script> HTML.


<script type="application/ld+json"> {
 "@context" :  "https://schema.org/" ,
 "@type" : "CreativeWork" ,
 "accessibilityHazard" :  [
        "FlashingHazard" , "noSoundHazard" ,
        "noMotionSimulationHazard" ] ,

 "accessibilityFeature" : [
        "alternativeText" , "longDescription" ] ,

 "encodingFormat" : [
        "text/html" , "image/png" ,
        "text/javascript" , "text/css" ] ,

 "accessibilityAPI" : [
        "ARIA" , "UIA" ],
 "accessibilityControl" : [
        "fullKeyboardControl" , "fullTouchControl" ,
        "fullVoiceControl" , "fullMouseControl" ]
} </script>

Структурированное представление примера JSON-LD.

@context
https://schema.org/
@type
CreativeWork
accessibilityHazard
0
FlashingHazard
1
noSoundHazard
2
noMotionSimulationHazard
accessibilityFeature
0
alternativeText
1
longDescription
encodingFormat
0
text/html
1
image/png
2
text/javascript
3
text/css
accessibilityAPI
0
ARIA
1
UIA
accessibilityControl
0
fullKeyboardControl
1
fullTouchControl
2
fullVoiceControl
3
fullMouseControl

Пример 6

Пример заметки или HTML разметки.


<img src="png"
  alt="standards. toothbrushes. don't ask" longdesc="927desc.html">

Пример, закодированный в формате Microdata, встроенный в HTML.


<figure itemscope itemtype="https://schema.org/CreativeWork">
 <meta itemprop="accessibilityFeature" content="textAlternative">
 <meta itemprop="accessibilityFeature" content="longDescription">
 <meta itemprop="accessibilityHazard" content="noFlashingHazard">
 <meta itemprop="accessibilityHazard" content="noMotionSimulationHazard">
 <meta itemprop="encodingFormat" content="image/png">
<img src="png"
  alt="standards. toothbrushes. don't ask" longdesc="927desc.html">
</figure>

Пример, закодированный в формате RDFa, встроенный в HTML.


<figure vocab="https://schema.org/" typeof="CreativeWork">
 <meta property="accessibilityFeature" content="textAlternative">
 <meta property="accessibilityFeature" content="longDescription">
 <meta property="accessibilityHazard" content="noFlashingHazard">
 <meta property="accessibilityHazard" content="noMotionSimulationHazard">
 <meta property="encodingFormat" content="image/png">
<img src="png"
  alt="standards. toothbrushes. don't ask" longdesc="927desc.html">
</figure>
Автор: Семён Авдосов [schema.su]
Дата публикации: 16.11.2024
Дата обновления: 20.11.2024
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