files/en-us/web/api/notification/lang/index.md
{{APIRef("Web Notifications")}}{{securecontext_header}} {{AvailableInWorkers}}
The lang read-only property of the
{{domxref("Notification")}} interface indicates the language used in the notification,
as specified in the lang option of the
{{domxref("Notification.Notification","Notification()")}} constructor.
The language itself is specified using a string representing a {{glossary("BCP 47 language tag")}}.
A string specifying the language tag.
The following snippet fires a notification; a simple options object is
created, then the notification is fired using the Notification()
constructor.
const options = {
body: "Your code submission has received 3 new review comments.",
lang: "en-US",
};
const n = new Notification("New review activity", options);
console.log(n.lang); // "en-US"
{{Specifications}}
{{Compat}}