NavigatorOnLine

在此页

特性
方法
规范
浏览器兼容性
另请参阅
相关话题

NavigatorOnLine interface contains methods and properties related to the connectivity status of the browser.

There is no object of type NavigatorOnLine , but other interfaces, like Navigator or WorkerNavigator , implement it.

特性

NavigatorOnLine interface doesn't inherit any property.

NavigatorOnLine.onLine 只读: 返回 布尔 indicating whether the browser is working online.

方法

NavigatorOnLine interface neither implements, nor inherit any method.

规范

规范	状态
HTML 实时标准 The definition of 'NavigatorOnLine' in that specification.	实时标准

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
`NavigatorOnLine`	Chrome 1	Edge 12	Firefox 3.5	IE 8	Opera 3	Safari 5	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 4.2	Samsung Internet Android 1.0
`onLine`	Chrome 1 1 Earlier versions of Chrome incorrectly return true when a tab is first opened, but it starts reporting the correct connectivity status after the first network event. Windows: 11, Mac: 14, Chrome OS: 13, Linux: Always returns `true` . For history, see crbug.com/7469 .	Edge 12	Firefox 3.5 3.5 Since Firefox 4 the browser returns `true` when 'Work Offline' mode is disabled and `false` when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return `false` ).	IE 8 8 in Internet Explorer 8 'online' and 'offline' events are raised on the `document.body` ; under IE 9 they are raised on both `document.body` and `window` .	Opera 3 3 From Opera 11.1 until Opera 12.1, the browser returns `true` when 'Work Offline' mode is disabled and `false` when it is enabled, regardless of actual connectivity.	Safari 5	WebView Android 1 1 Faulty in a WebView component, see Issue bug 16760 .	Chrome Android 18	Firefox Android 4	Opera Android 10.1 10.1 From Opera 11.1 until Opera 12.1, the browser returns `true` when 'Work Offline' mode is disabled and `false` when it is enabled, regardless of actual connectivity.	Safari iOS 4.2	Samsung Internet Android 1.0
Available in workers	Chrome ?	Edge ?	Firefox 29	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android 29	Firefox Android 35	Opera Android ?	Safari iOS ?	Samsung Internet Android 2.0

图例

完整支持
兼容性未知 ?

另请参阅

Navigator interface that implements it.
Online and offline events

元数据

最后修改： Jun 12, 2020

在此页

特性

方法

规范

浏览器兼容性

图例

另请参阅

相关话题