User-agent and navigator.platform, WOW64 on notebook computer

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User-agent and navigator.platform, WOW64 on notebook computer

Asked by duncanb7

at 2024-01-07 02:04:53

Point:500 Replies:6 POST_ID:828873USER_ID:11059

Topic:

Microsoft Operating Systems;JavaScript;Web Browsers

I have used the following javascript code to get all browser and my computer infomation
I got the user-agent and platform as follows

User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36

Platform: Win32

After checking user-agent defination on this site of MS
http://msdn.microsoft.com/library/ms537503.aspx, where "WOW64" means
A 32-bit version of Internet Explorer is running on a 64-bit processor
and Windows NT6.1 means Window 7 operation system
so I go to check my notebook intel CPU, Intel(R) Pentium(R) CPU at
http://ark.intel.com/products/51680/Intel-Pentium-Processor-P6300-3M-Cache-2_27-GHz
which said the instruction set is 64 bit and dual cores .

My question is
Question-1: My intel process is 64 bit CPU processor, right ? If right, "WOW64" is correct
on my notebook since I am using window7(Windows NT 6.1) which is window 32-bit described on javascript code of navigator.platform(Win).

Question-2: If what I said on question-1 all are correct, I should need to re-install
window 7 for 64 bit instead of 32 bit in order to speed up my window process, Right ?

Question-3: I don't know why my notebook will install 32-bit window 7 with intel 64 bit
processor ? Is it because the computer vendor wants to save cost for selling ?

Please advise and hope you understand my question

Duncan

javascript extract User-Agent and Platform

var nVer = navigator.appVersion;var nAgt = navigator.userAgent;var browserName  = navigator.appName;var fullVersion  = ''+parseFloat(navigator.appVersion);var majorVersion = parseInt(navigator.appVersion,10);var nameOffset,verOffset,ix;// In Opera, the true version is after "Opera" or after "Version"if ((verOffset=nAgt.indexOf("Opera"))!=-1) { browserName = "Opera"; fullVersion = nAgt.substring(verOffset+6); if ((verOffset=nAgt.indexOf("Version"))!=-1)   fullVersion = nAgt.substring(verOffset+8);}// In MSIE, the true version is after "MSIE" in userAgentelse if ((verOffset=nAgt.indexOf("MSIE"))!=-1) { browserName = "Microsoft Internet Explorer"; fullVersion = nAgt.substring(verOffset+5);}// In Chrome, the true version is after "Chrome"else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) { browserName = "Chrome"; fullVersion = nAgt.substring(verOffset+7);}// In Safari, the true version is after "Safari" or after "Version"else if ((verOffset=nAgt.indexOf("Safari"))!=-1) { browserName = "Safari"; fullVersion = nAgt.substring(verOffset+7); if ((verOffset=nAgt.indexOf("Version"))!=-1)   fullVersion = nAgt.substring(verOffset+8);}// In Firefox, the true version is after "Firefox"else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) { browserName = "Firefox"; fullVersion = nAgt.substring(verOffset+8);}// In most other browsers, "name/version" is at the end of userAgentelse if ( (nameOffset=nAgt.lastIndexOf(' ')+1) <          (verOffset=nAgt.lastIndexOf('/')) ){ browserName = nAgt.substring(nameOffset,verOffset); fullVersion = nAgt.substring(verOffset+1); if (browserName.toLowerCase()==browserName.toUpperCase()) {  browserName = navigator.appName; }}// trim the fullVersion string at semicolon/space if presentif ((ix=fullVersion.indexOf(";"))!=-1)   fullVersion=fullVersion.substring(0,ix);if ((ix=fullVersion.indexOf(" "))!=-1)   fullVersion=fullVersion.substring(0,ix);majorVersion = parseInt(''+fullVersion,10);if (isNaN(majorVersion)) { fullVersion  = ''+parseFloat(navigator.appVersion); majorVersion = parseInt(navigator.appVersion,10);}txt ="<p id='pd0'>Browser name  ="+browserName+'</p>';txt+="<p id='pd1'>Full version  = "+fullVersion+'</p>'txt+="<p id='pd2'>Major version = "+majorVersion+'</p>'txt+="<p id='pd3'>navigator.appName = "+navigator.appName+'</p>'txt+="<p id='pd4'>navigator.userAgent = "+navigator.userAgent+'</p>'txt+= "<p id='pd5'>Browser CodeName: " + navigator.appCodeName + "</p>";txt+= "<p id='pd6'>Browser Name: " + navigator.appName + "</p>";txt+= "<p id='pd7'>Browser Version: " + navigator.appVersion + "</p>";txt+= "<p id='pd8'>Cookies Enabled: " + navigator.cookieEnabled + "</p>";txt+= "<p id='pd9'>Platform: " + navigator.platform + "</p>";txt+= "<p id='pd10'>User-agent header: " + navigator.userAgent + "</p>";//document.getElementById("example").innerHTML=txt;document.write("<div id='browser'>"+txt+"</div>");

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Author: duncanb7 replied at 2024-01-12 00:51:09

Thanks for your reply

Have a nice day

Duncan

Accepted Solution

Expert: Kravimir replied at 2024-01-07 17:31:39

167 points EXCELLENT

Yes, it seems strange at first, but really it's very common.

64-bit desktop and laptop/notebook Intel and AMD processors are made to be backwards compatible.

There are other differences but the maximum amount of RAM supported by the operating system is the biggest one. 64-bit programs won't work on a 32-bit operating system. However, I'm not aware of any applications that only have 64-bit versions at this time. Also, at least with Windows Virtual PC, 32-bit Windows can not host virtual machines running 64-bit operating systems.

Author: duncanb7 replied at 2024-01-07 17:10:35

So is it strange, 64 bit CPU not using 64-bit window system/or other 64 bit system ?
probably, you mean 32 bit and 64 bit window system is not different on Intel 64 bit proccessor if the RAM is less than 4GB, right ?

Assisted Solution

Expert: Kravimir replied at 2024-01-07 17:07:55

166 points EXCELLENT

If the information that you posted is correct, yes. (I can't otherwise verify information that only you can provide.)

Author: duncanb7 replied at 2024-01-07 17:06:01

So my CPU is intel 64 bit, right ?

Assisted Solution

Expert: Kravimir replied at 2024-01-07 16:22:14

167 points EXCELLENT

Only switching from 32-bit Windows to 64-bit Windows won't improve your speed and if you have less than 4GB of RAM installed, will reduce the amount of available RAM for applications to use. The main advantage of 64-bit Windows is being able to use more than the approximately 3.3GB of RAM that can be used with 32-bit operating systems. So unless you upgrade to 8GB of RAM (which is the maximum that that processor supports), there is no benefit to using 64-bit Windows.

64-bit web browsers have problems with 32-bit plugin compatibility, so most people using 64-bit operating systems still use 32-bit web browsers.

Also 64-bit Windows is backwards compatible with 32-bit applications, but not old 16-bit applications.

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