I'm trying to generate Microdata markup (making use of Schema.org). I know that JSON-LD has a "@id" which helps reference that whatever data is.

Is there a similar thing for Microdata? As I wouldn't want to copy and paste all the data.


Yes, the itemid attribute (W3C, WHATWG).


<div itemscope itemtype="http://schema.org/Person" itemid="/team/alice#i">
  <!-- this person (not the page about this person) has the URI "/team/alice#i" -->

<div itemscope itemtype="http://schema.org/Book">
  <link itemprop="author" href="/team/alice#i" />

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