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The dir
read-only property of the Notification
interface indicates the text direction of the notification, as specified in the dir
option of the Notification()
constructor.
Note: This feature is available in Web Workers.
Syntax
var direction = Notification.dir;
Value
A DOMString
specifying the text direction. Possible values are:
auto
: adopts the browser's language setting behaviour (the default.)ltr
: left to right.rtl
: right to left.
Note: Most browsers seem to ignore explicit ltr and rtl settings, and just go with the browser-wide setting.
Examples
The following snippet fires a notification; a simple options
object is created, then the notification is fired using the Notification()
constructor.
var options = { body: 'Do you like my body?', dir: 'rtl' } var n = new Notification('Test notification',options); n.dir // should return 'rtl'
Specifications
Specification | Status | Comment |
---|---|---|
Notifications API The definition of 'dir' 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 | 6 (see notes) |
Available in workers | ? | 41.0 (41.0) | ? | ? | ? |
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) |
Available in workers | ? | ? | 41.0 (41.0) | ? | ? | ? | ? | ? |
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 itscreateNotification
method. - Prior to Firefox 22 (Firefox OS <1.2), the Notification was displayed when calling the
show
method and supported only theclick
andclose
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 usewindow.location.origin + "/my_icon.png"
becausewindow.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
- Before Chrome 22, the support for notification followed an old prefixed version of the specification and used the
navigator.webkitNotifications
object to instantiate a new notification. - Before Chrome 32,
Notification.permission
was not supported. - Before Chrome 42, service worker additions were not supported.
Safari notes
- Safari started to support notification with Safari 6, but only on Mac OSX 10.8+ (Mountain Lion).