hreflang attribute | hreflang property
Sets or retrieves the language code of the object.
the language code.
- Document Object Model (DOM) Level 1 Specification, Section 2.5.5
You must set the value of this property before you can retrieve it.
Language codes identify natural languages that are spoken, written, or otherwise used for the communication of information among people, and are defined and explained in Tags for the Identification of Languages (RFC1766). Computer languages are explicitly excluded from language codes.
hreflang was introduced in Microsoft Internet Explorer 6
In the a element in the following example, the hreflang attribute specifies the language code of the U.S. version of English.