HTML5: base – base URL

base – base URL # T

The base element specifies a document-wide base URL for the purposes of resolving relative URLs, and document-wide default browsing context name for the purposes of following hyperlinks.

Content model #

base = empty & base.attrs

Attribute model #

base.attrs = common.attrs & href ? & target ?

Element-specific attributes #

href = uri: The base URL for the document.
target = browsing-context-name-or-keyword: A browsing context name or keyword for use in following hyperlinks.

Tag omission #

The base element is a void element. A base element must have a start tag but must not have an end tag.

Permitted contexts #

head = title & base ? & (common.elem.metadata *)