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    Notification.icon

    This is an experimental technology
    Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use 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 spec changes.

    Summary

    The icon property indicates the URL of the icon to use with the notification.

    The value for this property is set during the Notification instantiation by defining the icon property in the options' object passed to the Notification constructor.

    Syntax

    var icon = instanceOfNotification.icon;
    

    Value

    A string representing a valid URL.

    Specifications

    Specification Status Comment
    Web Notifications Working Draft Initial specification.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support 5 webkit (see notes)
    22
    4.0 moz (see notes)
    22
    Not supported 25 6 (see notes)
    Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
    Basic support ? 4.0 moz (see notes)
    22
    1.0.1 moz (see notes)
    1.2
    Not supported ? Not supported

    Gecko notes

    • Prior to Firefox 22 (Firefox OS <1.2), the instantiation of a new notification must be done with the navigator.mozNotification object through its createNotification method.
    • Prior to Firefox 22 (Firefox OS <1.2), the Notification was displayed when calling the show method and was supporting the click and close events only.
    • Nick Desaulniers has written a Notification shim to cover both newer and older implementations.
    • One particular Firefox OS issue is that you can pass a path to an icon to use in the notification, but if the app is packaged you cannot use a relative path like /my_icon.png. You also can't use window.location.origin + "/my_icon.png" because window.location.origin is null in packaged apps. The manifest origin field fixes this, but it is only available in Firefox OS 1.1+. A potential solution for supporting Firefox OS <1.1 is to pass an absolute URL to an externally hosted version of the icon. This is less than ideal as the notification is displayed immediately with the icon missing, then the icon is fetched, but it works on all versions of Firefox OS.

    Chrome notes

    Safari notes

    • Safari started supporting notification with Safari 6 but only on Mac OSX 10.8+ (Mountain Lion).

    See also

    Document Tags and Contributors

    Contributors to this page: kscarfone, kollishivagangadhar, fscholz, Jeremie
    Last updated by: fscholz,