New answers tagged validation
In HTML5+Microdata, only the meta element can have the content attribute. (In HTML5+RDFa, every element may have the content attribute.) So if you want to add the string value "in_stock", and it should not be visible on the page, using the meta element is the correct choice: <meta itemprop="availability" content="in_stock" /> You were probably ...
Top 50 recent answers are included