Schema.org< head> HTML标记:我可以只使用meta标签吗? [英] Schema.org <head> HTML markup: can I just use the meta tags?
问题描述
所以我当时正在查看Schema.org.我需要将我的<html>标记更改为此吗?
So I was looking at Schema.org. Do I need to change my <html> tag to this
<html itemscope itemtype="http://schema.org/Article">
或者我可以只在我的<head></head>块中使用meta标签吗?
or can I just use only the meta tags within my <head></head> block?
<meta itemprop="name" content="The Name or Title Here">
<meta itemprop="description" content="This is the page description">
<meta itemprop="image" content="http://www.example.com/image.jpg">
推荐答案
属性需要属于一个项目.使用itemscope属性创建一个项目(itemtype属性可以为该项目指定类型).
Properties need to belong to an item. You create an item with the itemscope attribute (and the itemtype attribute can give this item a type).
没有itemscope，您的标记示例无效.
Without itemscope, your markup example is invalid.
可以仅在head元素内提供微数据，但不建议这样做有两个原因:
It is possible to provide Microdata only within the head element, but it’s not recommended for two reasons:
-
微数据旨在用于您现有的标记.虽然在
head中包含某些meta/link元素通常很有意义(与itemref一起使用，例如)，则大多数内容通常位于body中.如果只想使用head中的元素，则必须重复大部分内容.但是，如果您想走这条路，您可能更喜欢使用JSON-LD .
Microdata was intended to be used on your existing markup. While it can often make sense to include certain
meta/linkelements in thehead(withitemref, see an example), most of the content is typically in thebody. If you only want to use elements withinhead, you would have to duplicate most your content. But if you want to go that route, you might prefer to use JSON-LD.
由于head不允许使用分组元素(如div)，因此表达微数据变得很复杂.您将必须为每个属性使用itemref，并为每个项目滥用style这样的元素(请参阅此答案中的第一个代码段作为示例).
As head doesn’t allow the use of a grouping element (like div), it gets complex to express Microdata. You would have to use itemref for every property and misuse an element like style for every item (see the first snippet in this answer as example).
您的示例如下所示:
<head>
<style itemscope itemtype="http://schema.org/Article" itemref="p1a p1b p1c"></style>
<meta id="p1a" itemprop="name" content="The Name or Title Here">
<meta id="p1b" itemprop="description" content="This is the page description">
<link id="p1c" itemprop="image" href="http://www.example.com/image.jpg">
</head>
如果可以在head元素上使用itemscope，则更好:
If you can use itemscope on the head element, it would be better:
<head itemscope itemtype="http://schema.org/Article">
<meta itemprop="name" content="The Name or Title Here">
<meta itemprop="description" content="This is the page description">
<link itemprop="image" href="http://www.example.com/image.jpg">
</head>
但是，一旦您需要一个以上的项目(通常就是这种情况，例如Organization/Person就是author等)，这将不再起作用，您将需要像我的第一个片段中那样的解决方案.
But as soon as you need more than one item (which is typically the case, e.g., for the Organization/Person which is the author etc.), this doesn’t work anymore, and you would need a solution like in my first snippet.
请注意，允许在body元素内的微数据中使用meta/link元素.这使它变得更容易，因为您可以将div元素用于itemscope.因此，即使您复制内容而不是标记现有内容，也最好在body:
Note that it’s allowed to use meta/link elements for Microdata within the body element. This makes it way easier, as you can use div elements for the itemscope. So even if you duplicate your content instead of marking up your existing content, it would be preferable to do this in the body:
<div itemscope itemtype="http://schema.org/Article">
<meta itemprop="name" content="The Name or Title Here">
<meta itemprop="description" content="This is the page description">
<link itemprop="image" href="http://www.example.com/image.jpg">
</div>
(我将image属性的meta元素替换为link元素，因为使用meta为此无效.)
(I replaced the meta element for the image property with a link element, because using meta is invalid for this purpose.)
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