JAVASCRIPT

Retrieving Hardware Information using Advanced JavaScript with Internet Explorer

This is the third article in a series focusing on retrieving hardware information using JavaScript and presenting the same on a web page. You can directly copy and paste the code samples presented in this article into a file with the extension “.htm” and open in Internet Explorer 5.5+.

Author Info:

By: Jagadish Chaterjee

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May 02, 2006

TABLE OF CONTENTS:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
      <head>
            <title></title>
            <meta name="GENERATOR" content="Microsoft Visual Studio .NET
7.1">
            <meta name="vs_targetSchema" content=
"http://schemas.microsoft.com/intellisense/ie5">
            <script id="clientEventHandlersJS" language="javascript">
<!--

function Button1_onclick() {
      var locator = new ActiveXObject ("WbemScripting.SWbemLocator");
      var service = locator.ConnectServer(".");
      var properties = service.ExecQuery("SELECT * FROM Win32_Processor");
      var e = new Enumerator (properties);
      document.write("<table border=1>");
      dispHeading();
      for (;!e.atEnd();e.moveNext ())
      {
            var p = e.item ();
            document.write("<tr>");
            document.write("<td>" + p.Availability + "</td>");
            document.write("<td>" + p.Caption + "</td>");
            document.write("<td>" + p.CpuStatus + "</td>");
            document.write("<td>" + p.CurrentClockSpeed + "</td>");
            document.write("<td>" + p.DeviceID + "</td>");
            document.write("<td>" + p.Level + "</td>");
            document.write("<td>" + p.Name + "</td>");
            document.write("<td>" + p.ProcessorId + "</td>");
            document.write("<td>" + p.ProcessorType + "</td>");
            document.write("<td>" + p.SystemName + "</td>");
            document.write("</tr>");
      }
      document.write("</table>");
}

function dispHeading()
{
      document.write("<thead>");
      document.write("<td>Availability</td>");
        document.write("<td>Caption</td>");
        document.write("<td>CpuStatus</td>");
      document.write("<td>CurrentClockSpeed</td>");
      document.write("<td>DeviceID</td>");
        document.write("<td>Level</td>");
        document.write("<td>Name</td>");
      document.write("<td>ProcessorId</td>");
      document.write("<td>ProcessorType</td>");
      document.write("<td>SystemName</td>");
      document.write("</thead>");
}

//-->
            </script>
      </head>
      <body>
            <INPUT id="Button1" type="button" value="Button"
name="Button1" language="javascript" onclick="return Button1_onclick()">
      </body>
</html>

The above sample would automatically list all processors belonging to a computer. It mainly lists the Device ID, name, processor ID, caption, status and other relative properties. In fact, it has several other properties. Just to keep this sample simple, I listed only the ones most used. To retrieve this information, I used a built-in class, “Win32_Processor.”

The “for” loop I used in the above code iterates for every processor present in the system and finally retrieves only the properties of that processor. The above sample even works for a multi-processor system.

I suggest you refer to MSDN if the values returned by the above program confuse you.

Next: How to retrieve a computer's motherboard information using JavaScript >>