javascript version in a browser

[iacnats]

how to know which the javascript version in a browser?

thanks.

[Jon Hanlon]

In IE use ScriptEngineMajorVersion() and ScriptEngineMinorVersion()
jsVer = ScriptEngineMajorVersion() + ScriptEngineMinorVersion()/10

Otherwise you must use something like this:
http://www.texaswebdevelopers.com/snippet/browser-sniffer.html