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+).
How to Use JavaScript to Find Hardware Information - How to retrieve floppy drive information using JavaScript (Page 6 of 6 )
Now, let us try to develop a simple script (JavaScript) which shows the technique for retrieving the CD-ROM information on a web page. The entire code for the sample is as follows:
<!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>"); }
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.
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