Home arrow JavaScript arrow Page 5 - Retrieving Hardware Information using Advanced JavaScript with Internet Explorer
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
Rating: 4 stars4 stars4 stars4 stars4 stars / 9
May 02, 2006
TABLE OF CONTENTS:
  1. · Retrieving Hardware Information using Advanced JavaScript with Internet Explorer
  2. · How to dig out a computer's processor information using JavaScript
  3. · How to retrieve a computer's motherboard information using JavaScript
  4. · How to retrieve a computer's floppy controller information using JavaScript
  5. · How to retrieve a computer's keyboard information using JavaScript

print this article
SEARCH DEVARTICLES

TOOLS YOU CAN USE

advertisement
Retrieving Hardware Information using Advanced JavaScript with Internet Explorer - How to retrieve a computer's keyboard information using JavaScript
(Page 5 of 5 )

Now, let us try to develop a simple script (JavaScript) which shows how to display the information related to the keyboard. 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_Keyboard");
      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.Caption + "</td>");
            document.write("<td>" + p.Description + "</td>");
            document.write("<td>" + p.DeviceID + "</td>");
            document.write("<td>" + p.Layout + "</td>");
            document.write("<td>" + p.Name + "</td>");
            document.write("<td>" + p.NumberOfFunctionKeys + "</td>");
            document.write("<td>" + p.Status + "</td>");
            document.write("<td>" + p.Password + "</td>");
            document.write("<td>" + p.PNPDeviceID + "</td>");
            document.write("<td>" + p.Status + "</td>");
            document.write("</tr>");
      }
      document.write("</table>");
}

function dispHeading()
{
      document.write("<thead>");
      document.write("<td>Caption</td>");
        document.write("<td>Description</td>");
        document.write("<td>DeviceID</td>");
      document.write("<td>Layout</td>");
      document.write("<td>Name</td>");
        document.write("<td>NumberOfFunctionKeys</td>");
        document.write("<td>Status</td>");
      document.write("<td>Password</td>");
        document.write("<td>PNPDeviceID</td>");
        document.write("<td>Status</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 the information related to the keyboard. It provides very useful information such as DeviceID, PNPDeviceID, layout, number of function keys and so forth. To make the above sample simple, I listed out only the most important information. You can retrieve much more information. To retrieve this information, I used a built-in class, “Win32_Keyboard.” 

The “for” loop I used in the above code iterates for every keyboard (in fact, there would normally be only one keyboard) present with the system and finally retrieves only the properties of that keyboard.

Any comments, suggestions, 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.

blog comments powered by Disqus
JAVASCRIPT ARTICLES

- More Top jQuery Tutorials for Beginners
- More Top jQuery Plugins for Menus
- Top jQuery Tutorials for Beginners
- New UI Framework and SDK for JavaScript Rele...
- JavaScript OpenPGP Tool, Node.js 0.6.3 Avail...
- Yahoo Releases Cocktails Language and Develo...
- Customizing jQuery Slideshows: Dynamic Contr...
- Customizing jQuery Slideshows: the animate()...
- Customizing jQuery Slideshows: slideUp() and...
- Customizing jQuery Slideshows: hide() and sh...
- Web Workers: Performing Calculations in Para...
- More Top JavaScript Frameworks and Libraries
- More Dynamic jQuery Styling Techniques
- The Top JavaScript Libraries
- The Top JavaScript Frameworks

Dev Articles Forums 
 RSS  Articles
 RSS  Forums
 RSS  All Feeds
Weekly Newsletter
 
Developer Updates  
Free Website Content 
Contact Us 
Site Map 
Privacy Policy 
Support 



© 2003-2012 by Developer Shed. All rights reserved. DS Cluster 9 - Follow our Sitemap
Popular Web Development Topics
All Web Development Tutorials