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    Notification.icon

    The icon read-only property of the Notification interface contains the URL of an icon to be displayed as part of the notification, as specified in the icon option of the Notification() constructor.

    Syntax

    var icon = Notification.icon;
    

    Value

    A USVString.

    Examples

    In our Emogotchi demo (see source code), we run a simple spawnNotification() function when we want to fire a notification — this is passed arguments to specify the body, icon and title we want, then it creates the necessary options object and fires the notification using the Notification() constructor.

    function spawnNotification(theBody,theIcon,theTitle) {
      var options = {
          body: theBody,
          icon: theIcon
      }
      var n = new Notification(theTitle,options);
    }

    Specifications

    Specification Status Comment
    Notifications API
    The definition of 'icon' in that specification.
    Living Standard Living standard

    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 Not supported
    Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
    Basic support ?

    (Yes)

    4.0 moz (see notes)
    22
    1.0.1 moz (see notes)
    1.2
    Not supported ? Not supported

    (Yes)

    Firefox OS 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 supported only the click and close events.
    • Nick Desaulniers wrote 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 without the icon, then the icon is fetched, but it works on all versions of Firefox OS.
    • When using notifications  in a Firefox OS app, be sure to add the desktop-notification permission in your manifest file. Notifications can be used at any permission level, hosted or above.
      "permissions": {
          "desktop-notification":{}
      }

    Chrome notes

    Safari notes

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

    See also

    Document Tags and Contributors

    Last updated by: jpmedley,