The lang read-only property of the Notification interface indicates the text direction of the notification, as specified in the lang option of the Notification() constructor.
The language itself is specified using a DOMString representing a BCP 47 language tag. See the Sitepoint ISO 2 letter language codes page for a simple reference.
Note: This feature is available in Web Workers.
Syntax
var language = Notification.lang;
Value
A DOMString specifying the language tag.
Examples
The following snippet fires a notification; a simple options object is created, then the notification is fired using the Notification() constructor.
var options = {
  body: 'Do you like my body?',
  lang: 'en-US'
}
var n = new Notification('Test notification',options);
n.lang // should return 'en-US'
Specifications
| Specification | Status | Comment | 
|---|---|---|
| Notifications API The definition of 'lang' in that specification. | Living Standard | Living standard | 
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|---|
| Basic support | 5 webkit (see notes) 22 | (Yes) | 4.0 moz (see notes) 22 | No support | 25 | 6 (see notes) | 
| Available in workers | ? | ? | 41.0 (41.0) | ? | ? | ? | 
| Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android | 
|---|---|---|---|---|---|---|---|---|---|
| Basic support | ? | (Yes) | (Yes) | 4.0 moz (see notes) 22 | 1.0.1 moz (see notes) 1.2 | No support | ? | No support | (Yes) | 
| Available in workers | ? | ? | ? | 41.0 (41.0) | ? | ? | ? | ? | ? |