JavaScript Screen Object JavaScript Navigator Object

Navigator userAgent Property

userAgentA read-only property that returns the user agent string that the browser sends to the server-The value of the 'agent' header.

Syntax:

navigator.userAgent

Example

var x = navigator.userAgent;
document.querySelector("#output").innerHTML = x;

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Browser compatibility

All browsers fully support the userAgent property:

Property
userAgent	Yes	Yes	Yes	Yes	Yes

Technical details

Return value:	A string representing the current browser's user agent string

More examples

This example displays all Navigator properties:

Example

var txt = "";
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>";
document.write(txt);

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Related References

Navigator Reference:navigator.appCodeName property

Navigator Reference:navigator.appname property

Navigator Reference:navigator.cookieEnabled property

Navigator Reference:navigator.language property

Navigator Reference:navigator.onLine property

Navigator Reference:navigator.product property

JavaScript Navigator Object