Microdata introduces five global attributes that would be available for any element to use and give context for machines about your data.
| Attribute | Description |
|---|---|
| Itemscope | This is used to create an item. The itemscope attribute is a boolean attribute that tells that there is Microdata on this page, and this is where it starts. |
| Itemtype | This attribute is a valid URL which defines the item and provides the context for the properties. |
| Itemid | This attribute is a global identifier for the item. |
| Itemprop | This attribute defines a property of the item. |
| Itemref | This attribute gives a list of additional elements to crawl to find the name-value pairs of the item. |