NavigatorOnLine

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Properties
Methods
Specifications
Browser compatibility
See also

The 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.

Properties

The NavigatorOnLine interface doesn't inherit any property.

NavigatorOnLine.onLine Read only: Returns a Boolean indicating whether the browser is working online.

Methods

The NavigatorOnLine interface neither implements, nor inherit any method.

Specifications

Specification	Status	Comment
HTML Living Standard The definition of 'NavigatorOnLine' in that specification.	Living Standard	No change from the latest snapshot, HTML5
HTML5 The definition of 'NavigatorOnLine' in that specification.	Recommendation	Snapshot of HTML Living Standard with its initial specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
Basic support	Chrome Full support Yes	Edge ?	Firefox Full support Yes	IE Full support Yes	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Edge Mobile ?	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android ?
Support on `WorkerNavigator`	Chrome ?	Edge ?	Firefox Full support 29	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android Full support 29	Edge Mobile ?	Firefox Android Full support 35	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`onLine`	Chrome Full support Yes Notes Full support Yes Notes Notes 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 Full support Yes	Firefox Full support 3.5 Notes Full support 3.5 Notes Notes Since Firefox 4 the browser returns `true` when 'Work Offline' mode is disabled and `false` when it is enabled, regardless of actual connectivity. Full support 4 Notes Notes 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 Full support 8 Notes Full support 8 Notes Notes 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 No support No Notes No support No Notes Notes Since Opera 11.10, the browser returns `true` when 'Work Offline' mode is disabled and `false` when it is enabled, regardless of actual connectivity.	Safari Full support 5	WebView Android Full support Yes Notes Full support Yes Notes Notes Faulty in a WebView component, see Issue bug 16760.	Chrome Android Full support Yes	Edge Mobile Full support Yes	Firefox Android Full support 4	Opera Android ?	Safari iOS Full support Yes	Samsung Internet Android ?

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
See implementation notes.: See implementation notes.

Document Tags and Contributors

Tags:

API
HTML-DOM

Contributors to this page: fscholz, chrisdavidmills, abbycar, teoli

Last updated by: fscholz, Apr 13, 2018, 3:19:49 AM