Services.jsm

The Services.jsm JavaScript code module offers a wide assortment of lazy getters that simplify the process of obtaining references to commonly used services.

To use it, you first need to import the code module into your JavaScript scope.

For Add-on SDK based extensions, you can use require():

var { Services }  = require("resource://gre/modules/Services.jsm");

For bootstrapped and legacy add-ons you can use:

Components.utils.import("resource://gre/modules/Services.jsm");

Then you can obtain references to services by simply accessing them from the Services object exported by the code module. For example, to obtain a reference to the preferences service:

var prefsService = Services.prefs;

Provided service getters

¹ Mobile only
² Windows only
³ Main process only
⁴ Child process only

See also

• Using JavaScript code modules
• JavaScript code modules
• mozilla::services C++ namespace
• Services.jsm source on DXR