To keep the markup separate from the actual content of the HTML file, there is a special, distinguishing HTML syntax that is used. These special components are known as HTML tags. The tags can contain ...

The JSX markup is the function’s return value ... imported libraries like the React framework, and a complete HTML syntax that can reference these features. Notice that JSX can use expressions ...

This post originally appeared on O'Reilly Programming ("Stop standardizing HTML"). It's republished with permission. When HTML first appeared, it offered a coherent if limited vocabulary for ...

The new structured data testing tool added these features: Validation for all Google features powered by structured data Support for markup in the JSON-LD syntax, including in dynamic HTML pages ...

Markup is what HTML tags do to the text inside of them; they mark it as a specific type of text. For example, markup text could come in the form of boldface or italicized type to draw specific ...