navigator Properties   Object Properties Summary

---

Retrieves the platform and version of the browser.

HTML	N/A
Script	[ sVersion = ] navigator.appVersion

4.0 ( compatible; MSIE 5; Windows NT )	String returned by Microsoft® Internet Explorer® 5.
4.0 ( compatible; MSIE 4.01; Windows NT )	String returned by Microsoft® Internet Explorer® 4.01.
4.04 ( en ) ( WinNT;I;Nav )	String returned by Netscape Navigator® 4.04 when running on Microsoft® Windows NT®.
sVersion	String specifying platform and version information for the browser.

The property is read-only with a default value specified by the browser.

The following script detects the current user's browser and displays its appName and appVersion attributes in an alert box.

<script language="JavaScript">
<!--
function getBrowser ( ) {
   var browser = navigator.appName;
   browser += "\n" + navigator.appVersion;
   alert ( browser );
}
//-->
</script>

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Often, this attribute is used with appName to check for a browser requirement in a script. In the following, a variable "isIE4" checks to see if the string returned by appName contains "Microsoft ..." and the appVersion is 4 or later; if not, the variable returns false. Other scripts can then refer to this variable as needed.

<script language="JavaScript">
var isIE4 = ( ( navigator.appName == 
  'Microsoft Internet Explorer' ) &&
  ( parseInt ( navigator.appVersion ) >= 4 ) );
...
if ( isIE4 )
  ... code for IE4
else
  ... code for others
</script>

navigator

appCodeName, appMinorVersion, appName, userAgent