NDEFRecord: lang property
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
  The lang
  property of the NDEFRecord interface returns the language of
  a textual payload, or null if one was not supplied.
The record might be missing a language tag, for example, if the recorded information is not locale-specific.
Syntax
js
NDEFRecord.lang
Value
A string.
Specifications
| Specification | 
|---|
| Web NFC API  # dom-ndefrecord-lang  | 
Browser compatibility
BCD tables only load in the browser
See also
- HTML 
langattribute, that declares content language of the document or its elements - HTTP headers that declare content language: 
Content-LanguageandAccept-Language