安全上下文
此特征只可用于 安全上下文 (HTTPS)，在某些或所有 支持浏览器 .

dir 只读特性在 Notification interface indicates the text direction of the notification, as specified in the dir option of the Notification() 构造函数。

句法

var direction = Notification.dir;
					

值

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.

注意 : Most browsers seem to ignore explicit ltr and rtl settings, and just go with the browser-wide setting.

范例

The following snippet fires a notification; a simple 选项 object is created, then the notification is fired using the Notification() 构造函数。

var options = {
  body: 'Do you like my body?',
  dir: 'rtl'
}
var n = new Notification('Test notification',options);
console.log(n.dir) // should return 'rtl'
					

规范

规范	状态	注释
Notifications API The definition of 'dir' in that specification.	实时标准	Living standard

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
dir	Chrome Yes	Edge 14	Firefox Yes	IE No	Opera Yes	Safari Yes	WebView Android No	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS No	Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

另请参阅

• Using the Notifications API

元数据

• 最后修改： Jul 23, 2020