GM.notification

This method displays a notification to the user, using the underlying browser and operating system's notification mechanism.

function GM.notification( text, title, image, onclick )

or

function GM.notification( options )

Compatibility: Greasemonkey 4.0+

text

String The main notification text.

title

String Optional. The title of the notification. If not provided, the title will be "Greasemonkey".

image

String Optional. The URL for an image to display in the dialog. If not provided, the Greasemonkey logo will be used.

onclick

Function Optional. Callback, triggered when the notification window is clicked.

Alternately, this method can take one argument, an options object. Described below are the properties that may be defined on that object.

text

String The main notification text.

title

String Optional. The title of the notification. If not provided, the title will be "Greasemonkey".

image

String Optional. The URL for an image to display in the dialog. If not provided, the Greasemonkey logo will be used.

onclick

Function Optional. Callback, triggered when the notification window is clicked.

ondone

Function Optional. Callback, triggered when the notification window closes, either by user action or timing out.

undefined

GM.notification("A new widget is available at the frobber.", "New widget!");

GM.notification({
  text: "An updated widget is available at the frobber.",
  title: "Updated widget!",
  ondone: function() {
    console.log("The widget has been frobbed.");
  }
});

The appearance is platform specific, but could be for example: