Using Java Script detect if OS is 64 bit version or 32 bit.

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Use following html code to show OS version:

<html>
<script>
function onload()
{
if (navigator.userAgent.indexOf("WOW64") != -1 || navigator.userAgent.indexOf("Win64") != -1 )
{
   alert("64 bit");
} else {
   alert("32 bit");
}
}
</script>
<body>
<body onload="onload()" scrolling="no">
</body>
</html>


Ref: UserAgent (http://msdn.microsoft.com/en-us/library/ms537503%28v=vs.85%29.aspx)





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