JAVASCRIPT

How to Use JavaScript to Find Hardware Information

This article mainly concentrates on retrieving the hardware information of a system. All of the examples in this article can be directly tested, by simply copying and pasting the entire code (of each section) in any text file with the extension .HTM and opening the file using Microsoft Internet Explorer (preferably 5.5+).

Author Info:

By: Jagadish Chaterjee

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April 11, 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_FloppyDrive");
      var e = new Enumerator (properties);
      document.write("<table border=1>");
      for (;!e.atEnd();e.moveNext ())
      {
            var p = e.item ();
            document.write("<tr>");
            document.write("<td>" + p.Description + "</td>");
            document.write("<td>" + p.DeviceID + "</td>");
            document.write("<td>" + p.Status + "</td>");
            document.write("<td>" + p.Manufacuturer + "</td>");
            document.write("</tr>");
      }
      document.write("</table>");
}

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

The above code would automatically list all the information related to the floppy drive. To retrieve floppy drive information, I used the built-in class “Win32_FloppyDrive.” The class internally has a lot of properties, methods and events. But in the above example we concentrated only on the properties “Description,” “DeviceID,” “Status” and other properties related to the “Win32_FloppyDrive” class.

The “for” loop I used in the above code iterates for every floppy drive present in the system and finally retrieves only the properties of that drive.

Any comments, suggestions, ideas, improvements, bugs, errors, feedback etc. are highly appreciated at jag_chat@yahoo.com.

DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.