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This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.

This API is available on Firefox OS for internal applications only.


The get method allows to retrieve the current status of a given permission for a given app.


 var value = navigator.mozPermissionsettings.get(permission, manifest, origin, browserFlag)


A string with the name of the permission to retrieve.
A string representing the URL of the manifest of the app to check, or for an app running inside the browser, the URL of the browser app manifest.
A string representing the domain name of the app.
A boolean indicating if the app is running in the browser instead of as an installed app.


A string containing the value of the permission. It can be:

  • deny    : the permission is not allowed
  • prompt  : the user must be prompted next time the permission is needed
  • allow   : the permission is allowed
  • unknown : the application did not ask for this permission (therefore it is not allowed) and can't even prompt the user to get it


Not part of any specification.

See also

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