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Navigator onLine Property

Navigator Object Reference Navigator Object

Example

Determine whether the browser is online:

var x = "Is the browser online? " + navigator.onLine;

The result of x will be:


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Definition and Usage

The onLine property returns a Boolean value that specifies whether the browser is in online or offline mode.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The onLine property is supported in all major browsers.


Syntax

navigator.onLine

Return Value

Type Description
Boolean Specifies whether the browser is in online or offline mode: "true" if online, "false" if not.


More Examples

Example

A demonstration of all navigator properties in one example:

txt = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
txt+= "<p>Browser Name: " + navigator.appName + "</p>";
txt+= "<p>Browser Version: " + navigator.appVersion + "</p>";
txt+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
txt+= "<p>Browser Language: " + navigator.language + "</p>";
txt+= "<p>Browser Online: " + navigator.onLine + "</p>";
txt+= "<p>Platform: " + navigator.platform + "</p>";
txt+= "<p>User-agent header: " + navigator.userAgent + "</p>";
txt+= "<p>User-agent language: " + navigator.systemLanguage + "</p>";

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Navigator Object Reference Navigator Object

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