itemtype

全局属性 itemtype 指定将用于定义数据结构中的 itemprop(项目属性)的词汇表的 URL。

¥The global attribute itemtype specifies the URL of the vocabulary that will be used to define itemprop's (item properties) in the data structure.

itemscope 用于设置 itemtype 设置的词汇表在数据结构中的活动范围。

¥itemscope is used to set the scope of where in the data structure the vocabulary set by itemtype will be active.

Google 和其他主要搜索引擎支持结构化数据的 schema.org 词汇表。该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,startDatelocation 属性指定音乐会的关键细节。在这种情况下,MusicEvent 将是 itemtype 使用的 URL,startDate 和位置是 MusicEvent 定义的 itemprop

¥Google and other major search engines support the schema.org vocabulary for structured data. This vocabulary defines a standard set of type names and property names. For example, MusicEvent indicates a concert performance, with startDate and location properties specifying the concert's key details. In this case, MusicEvent would be the URL used by itemtype, with startDate and location as itemprop's which MusicEvent defines.

注意:有关 itemtype 属性的更多信息,请参见 https://schema.org/Thing

¥Note: More about itemtype attributes can be found at https://schema.org/Thing

  • itemtype 属性的值必须是一组无序的唯一标记,这些标记区分大小写,每个标记都是有效的绝对 URL,并且全部定义为使用相同的词汇表。该属性的值必须至少有一个标记。
  • 项目类型必须全部是适用规范(例如 schema.org)中定义的类型,并且必须全部定义为使用相同的词汇表。
  • itemtype 属性只能在指定了 itemscope 属性的元素上指定。
  • itemid 属性只能在同时指定了 itemscope 属性和 itemtype 属性的元素上指定。它们只能在具有 itemscope 属性的元素上指定,其 itemtype 属性指定的词汇表不支持项目的全局标识符(如该词汇表规范所定义)。
  • 全局标识符的确切含义由词汇表的规范确定。留给这样的规范来定义是否允许存在相同全局标识符(无论是在同一页面还是不同页面上)的多个项目,以及该词汇表的处理规则是什么,关于处理多个项目的情况 相同的 ID。

示例

¥Examples

表示产品的结构化数据

¥Representing structured data for a product

此示例使用微数据属性来表示产品的结构化数据,如下所示:

¥This example uses microdata attributes to represent structured data for a product, as follows:

itemscope itemtype 产品([https://schema.org/Product](https://schema.org/Product))
itemprop name 执行砧
itemprop image [https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png](https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png)
itemprop description Executive Anvil 比 ACME 的经典 Anvil 更光滑,非常适合寻求从高处落下的东西的商务旅行者。
itemprop mpn 925872
itemprop 品牌[东西]
itemprop name ACME
itemscope 项目属性[项目类型] 聚合评级[聚合评级]
itemprop ratingValue 4.4
itemprop reviewCount 89
itemprop 优惠[优惠] [https://schema.org/Offer](https://schema.org/Offer)
itemprop priceCurrency USD
itemprop price 119.99
itemprop priceValidUntil 2020-11-05
itemprop itemCondition [https://schema.org/UsedCondition](https://schema.org/UsedCondition)
itemprop availability [https://schema.org/InStock](https://schema.org/InStock)
itemscope 项目属性[项目类型] 卖家[组织] [https://schema.org/Organization](https://schema.org/Organization)
itemprop name 执行对象

注意:Google 的 结构化数据测试工具 是一个从 HTML 中提取微数据结构的便捷工具。在此处显示的 HTML 上尝试一下。

¥Note: A handy tool for extracting microdata structures from HTML is Google's Structured Data Testing Tool. Try it on the HTML shown here.

HTML

html
<div itemscope itemtype="https://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="https://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="https://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="https://schema.org/Organization">
        <span itemprop="name">Executive Objects<br /></span>
      </span>
      Condition:
      <link
        itemprop="itemCondition"
        href="https://schema.org/UsedCondition" />Previously owned, in excellent
      condition<br />
      <link itemprop="availability" href="https://schema.org/InStock" />In
      stock! Order now!
    </span>
  </p>
</div>

结果

¥Result

规范

Specification
HTML Standard
# attr-itemtype

¥Specifications

也可以看看

¥See also