explorer version ie firefox chrome version
<html>
<body>
<script type="text/javascript">
var browser=navigator.appName
var b_version=navigator.appVersion
var version=parseFloat(b_version)
document.write("Browser name: "+ browser)
document.write("<br />")
document.write("Browser version: "+ version)
</script>
</body>
</html>
/*************************************************************************************/
<html>
<head>
<script type="text/javascript">
function detectBrowser()
{
var browser=navigator.appName
var b_version=navigator.appVersion
var version=parseFloat(b_version)
if ((browser=="Netscape"||browser=="Microsoft Internet Explorer")
&& (version>=4))
{alert("Your browser is good enough!")}
else
{alert("It's time to upgrade your browser!")}
}
</script>
</head>
<body onload="detectBrowser()">
</body>
</html>
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