HTML itemref global attribute
Properties that are not descendants of an element with the itemscope attribute can be associated with an item using the global attribute itemref.
itemref provides a list of element IDs (not itemids) elsewhere in the document, with additional properties
The itemref attribute can only be specified on elements that have an itemscope attribute specified.
Note: The itemref attribute is not part of the microdata data model. It is merely a syntactic construct to aid authors in adding annotations to pages where the data to be annotated does not follow a convenient tree structure. For example, it allows authors to mark up data in a table so that each column defines a separate item while keeping the properties in the cells.
Examples
Representing structured data for a band
This example uses microdata attributes to represent the following structured data (in JSON-LD format):
{ "@id": "amanda", "name": "Amanda", "band": { "@id": "b", "name": "Jazz Band", "size": 12 } } HTML
<div itemscope id="amanda" itemref="a b"></div> <p id="a">Name: <span itemprop="name">Amanda</span></p> <div id="b" itemprop="band" itemscope itemref="c"></div> <div id="c"> <p>Band: <span itemprop="name">Jazz Band</span></p> <p>Size: <span itemprop="size">12</span> players</p> </div> Result
Specifications
| Specification |
|---|
| HTML # attr-itemref |
See also
- Other different global attributes
- Other microdata related global attributes: