The global attribute itemref properties, which are not descendants of an element with the itemscope attribute, can be associated with the item using an itemref. itemref provides a list of element id's (not itemids), with additional properties elsewhere in the document.

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.



<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>

Structured data

(in JSON-LD format)

  "@id": "amanda",
  "name": "Amanda",
  "band": {
    "@id": "b",
    "name": "Jazz Band",
    "size": 12



Specification Status Comment
HTML Microdata Working Draft
HTML Living Standard
The definition of 'itemref' in that specification.
Living Standard

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes Yes Yes Yes ?

See also

Document Tags and Contributors

 Last updated by: mfuji09,