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setActionHandler

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 setActionHandler() property of the MediaSession interface sets an event handler for a media session action.

Syntax

navigator.mediaSession.setActionHandler(type, callback)

Parameters

type
A string representing an action type to listen for. It will be one of play, pause, seekbackward, seekforward, previoustrack, or nexttrack.
callback
Indicates the function to call when the specified action type is invoked. This is a void function, with no parameters.

Returns

void

Example

The following example creates a new media session and assigns action handlers to it:

if ('mediaSession' in navigator){
  navigator.mediaSession.metadata = new MediaMetadata({
    title: "Podcast Episode Title",
    artist: "Podcast Host",
    album: "Podcast Name",
    artwork: [{src: "podcast.jpg"}]
  });
  navigator.mediaSession.setActionHandler('play', function() {});
  navigator.mediaSession.setActionHandler('pause', function() {});
  navigator.mediaSession.setActionHandler('seekbackward', function() {});
  navigator.mediaSession.setActionHandler('seekforward', function() {});
  navigator.mediaSession.setActionHandler('previoustrack', function() {});
  navigator.mediaSession.setActionHandler('nexttrack', function() {});
}

Specifications

Specification Status Comment
Media Session Standard
The definition of 'setActionHandler()' in that specification.
Editor's Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support ? ? No support ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support No support 57 ? ? ? No support ?

Document Tags and Contributors

 Contributors to this page: bunnybooboo, jpmedley
 Last updated by: bunnybooboo,