Javascript Navigator userAgent

by top54u.com 18 Jul, 2008

Inside JavaScript Tutorials

Javascript Window Navigator Object

Javascript Navigator appName

Javascript Navigator appVersion

Javascript Navigator Properties

JavaScript Startup

Javascript Location Redirect Function

Javascript Browser Detection

Spotlight.....

Javascript Navigator userAgent property returns the combination of navigation object properties such as appCodeName and appVersion. Javascript navigator userAgent property enables you to detect the name and version of any web browser such as Microsoft Internet Explorer, FireFox, and Opera etc. userAgent property of navigator returns the semi-colon separated values of Browser Name and version, OS Platform version, .Net CLR and versions installed in windows XP and above.

Syntax for Javascript Navigator userAgent

navigator.userAgent

window.navigator.userAgent

You can also access the userAgent property using window.navigator in javascript code as shows in above syntax.

Example of Javascript Navigator userAgent

document.write(navigator.userAgent);

</script>

Above example of navigator object property userAgent returns the browser sent header information according to the client web browser used to visit the web site.

In Internet Explorer navigator.userAgent returns:

Output: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)

In FireFox navigator.userAgent returns:

Output: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.16) Gecko/20080702 Firefox/2.0.0.16

In Opera web browser navigator.userAgent returns

Output: Opera/9.00 (Windows NT 5.1; U; en)

Spotlight.....

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