itemtype（属性） | itemtype (attribute)

itemtype（属性）

全局属性itemtype指定将用于定义itemprop数据结构中的（项目属性）的词汇表的URL 。itemscope用于设置数据结构中设置的词汇itemtype将处于活动状态的范围。

谷歌和其他主要的搜索引擎支持schema.org词汇表的结构化数据。这个词汇表定义了一组标准的类型名称和属性名称。例如，MusicEvent表示音乐会表演，startDate以及location指定音乐会关键细节的属性。在这种情况下，MusicEvent itemtype，与startDate和MusicEvent定义的位置将被itempropURL使用。

注意：关于itemtype属性的更多信息可以在http://schema.org/Thing找到

项目类型属性必须有一个值是一组无序独特标记，其区分大小写的，各是一个有效的和绝对的URL，并且所有定义为使用相同的词汇。该属性的值必须至少有一个令牌。

简单的例子

HTML

<div itemscope itemtype="http://schema.org/Product">
  <span itemprop="brand">ACME</span>
  <span itemprop="name">Executive Anvil</span>
</div>

结构化数据

itemscope	itemtype	schema.org Product
itemprop	name	Executive Anvil
itemprop	brand Thing
itemprop	name	ACME

样例

HTML

<div itemscope itemtype="http://schema.org/Product">
  <span itemprop="brand">ACME<br></span>
  <span itemprop="name">Executive Anvil<br></span>
  <img itemprop="image" src="https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png" width="50" height="50" alt="Executive Anvil logo" /><br>
  
<span itemprop="description">Sleeker than ACME's Classic Anvil, the
    Executive Anvil is perfect for the business traveler
    looking for something to drop from a height.
  <br>
</span>

  Product #: <span itemprop="mpn">925872<br></span>
  <span itemprop="aggregateRating" itemscope itemtype="http://schema.org/AggregateRating">
    Rating: <span itemprop="ratingValue">4.4</span> stars, based on <span itemprop="reviewCount">89
      </span> reviews
  </span><p>
  
<span itemprop="offers" itemscope itemtype="http://schema.org/Offer">
    Regular price: $179.99<br>
    <meta itemprop="priceCurrency" content="USD" />
    <span itemprop="price">Sale price: $119.99<br></span>
    (Sale ends <time itemprop="priceValidUntil" datetime="2020-11-05">
      5 November!</time>)<br>
    Available from: <span itemprop="seller" itemscope itemtype="http://schema.org/Organization">
                      <span itemprop="name">Executive Objects<br></span>
                    </span>
    Condition: <link itemprop="itemCondition" href="http://schema.org/UsedCondition"/>Previously owned,
      in excellent condition<br>
    <link itemprop="availability" href="http://schema.org/InStock"/>In stock! Order now!
</span>

</div>

结果

HTML

结构化数据

itemscope	itemtype	Product (http://schema.org/Product)
itemprop	name	Executive Anvil
itemprop	image	https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png
itemprop	description	Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height.
itemprop	mpn	925872
itemprop	brand Thing
itemprop	name	ACME
itemscope	itempropitemtype	aggregateRatingAggregateRating
itemprop	ratingValue	4.4
itemprop	reviewCount	89
itemprop	offers Offer	http://schema.org/Offer
itemprop	priceCurrency	USD
itemprop	price	119.99
itemprop	priceValidUntil	2020-11-05
itemprop	itemCondition	http://schema.org/UsedCondition
itemprop	availability	http://schema.org/InStock
itemscope	itempropitemtype	seller Organization
itemprop	name	Executive Objects

注意：用于从HTML中提取微数据结构的便捷工具是Google的结构化数据测试工具。试试上面显示的HTML

产品规格

规范	状态	评论
物品种类		工作组注意事项 - 不再积极发展

浏览器兼容性

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)

Feature	Android	Chrome for Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)	(Yes)