Window navigator.onLine
Example
Is the browser online?
let online = navigator.onLine;
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More "Try it Yourself" examples below.
Description
The onLine property returns true
if the browser is online, otherwise false.
The onLine property is read-only.
Note
This property is unreliable.
A computer can be connected to a network without having Internet access.
Syntax
navigator.onLine
Return Value
| Type | Description |
| A boolean | true if the browser is in online,
otherwise false. |
More Examples
Display all navigator properties:
let text = "<p>Browser CodeName: " + navigator.appCodeName + "</p>" +
"<p>Browser Name: " + navigator.appName + "</p>" +
"<p>Browser Version: " + navigator.appVersion + "</p>" +
"<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>" +
"<p>Browser Language: " + navigator.language + "</p>" +
"<p>Browser Online: " + navigator.onLine + "</p>" +
"<p>Platform: " + navigator.platform + "</p>" +
"<p>User-agent header: " + navigator.userAgent + "</p>";
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Browser Support
navigator.onLine is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |
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