the user interface's language should not be derived from the body element #895
Description
From the payment request spec,
Lines 1094 to 1097 in fe208db
The body element's definition states "The body element of a document is the first of the html element's children that is either a body element or a frameset element, or null if there is no such element."
Thus,
<body>is a node can can have a language<frameset>is a nodenullis not a node and cannot have a language.
I'm not sure I support the use case. Other APIs, e.g., the notification API, have no such defaulting and have explicit support for language annotation. And especially for the frameset case it seems that it's highly likely it might not match the language of the application anyway.
Thus, the user interface's language should not be derived from "the body element". The spec could probably include explicit support for language annotation the way the notification API does it.