How to know browser version in javascript ?
CK CK 3788 
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There are two objects often used for this, the navigator.appName and navigator.appVersion objects. The first one returns the name of the browser, the second returns the version of the browser.

<HEAD>
<SCRIPT language="JavaScript">
<!--
alert ( 'Browser version is' + navigator.appVersion);
//-->
</SCRIPT>
</HEAD>

Isn't it simple ?
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