This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The WindowEventHandlers.onlanguagechange event handler is a property containing the code to execute when the languagechange event, of type Event, is received by the object implementing this interface, usually a Window, an HTMLBodyElement, or an HTMLIFrameElement. Such an event is sent by the browser to inform that the preferred languages list has been updated. The list is accessible via NavigatorLanguage.languages.


object.onlanguagechange = function;


  • function is the name of a user-defined function, without the () suffix or any parameters, or an anonymous function declaration, such as function(event) {...}. An event handler always has one single parameter, containing the event, here of type Event.


window.onlanguagechange = function(ev) { alert("languagechange event detected!"); };


Specification Status Comment
WHATWG HTML Living Standard
The definition of 'WindowEventHandler.onlanguagechange' in that specification.
Living Standard Initial specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? 32.0 (32.0) No support ? ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? 32.0 (32.0) No support ? ?

See also

Document Tags and Contributors

 Contributors to this page: foxstorm, teoli, kscarfone
 Last updated by: foxstorm,