AudioChannelManager.headphones

The headphones read-only property of the AudioChannelManager interface returns a Boolean that indicates whether headphones are plugged into the device. A true value means that headphone are plugged in; false means they aren't.

Syntax

var myHeadphonesValue = navigator.mozAudioChannelManager.headphones;

Value

A Boolean value

Example

In the following simple example, we use the navigator.mozAudioChannelManager property to access the app's AudioChannelManager object, first to do some rudimentary feature detection, and then to create an anonymous function that runs when the AudioChannelManager.onheadphoneschange event handler fires (when the headphones are plugged in or unplugged). In this function, we test to see if AudioChannelManager.headphones returns true, then give the user a notification to tell them the result.

if (navigator.mozAudioChannelManager) {
  navigator.mozAudioChannelManager.onheadphoneschange = function() {
    if(navigator.mozAudioChannelManager.headphones == true) {
      var notification = new Notification('Headphones plugged in!');
    } else {
      var notification = new Notification('Headphones unplugged!');
    }
  }
}

Specifications

The AudioChannels API has no official spec at the moment; see https://wiki.mozilla.org/WebAPI/AudioChannels for implementation details, WebIDL, etc.

Browser compatibility

See also

• App permissions for Firefox OS
• Using the AudioChannels API
• navigator.mozAudioChannelManager
• HTMLMediaElement