JAVASCRIPT

Advanced JavaScript with Internet Explorer: Retrieving Networking Configuration Information

This is the second article in a series focusing on retrieving system (or client) information using JavaScript and presenting the same on a web page. You can directly copy and paste all of the code samples present in this article into a file with extension “.htm” and open them in Internet Explorer 5.5+.

Author Info:

By: Jagadish Chaterjee

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April 04, 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_NetworkConnection");
      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.ConnectionState + "</td>");
            document.write("<td>" + p.ConnectionType + "</td>");
            document.write("<td>" + p.Description + "</td>");
            document.write("<td>" + p.DisplayType + "</td>");
            document.write("<td>" + p.LocalName + "</td>");
            document.write("<td>" + p.Name + "</td>");
            document.write("<td>" + p.RemoteName + "</td>");
            document.write("<td>" + p.RemotePath + "</td>");
            document.write("<td>" + p.ResourceType + "</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>ConnectionState</td>");
        document.write("<td>ConnectionType</td>");
      document.write("<td>Description</td>");
      document.write("<td>DisplayType</td>");
      document.write("<td>LocalName</td>");
      document.write("<td>Name</td>");
      document.write("<td>RemoteName</td>");
      document.write("<td>RemotePath</td>");
      document.write("<td>ResourceType</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 would automatically list all remote/LAN network connections belonging to your system, along with only a few of the properties like LocalName, UNC path name, ConnectionState, and so on. To retrieve this information, I used a built-in class, “Win32_NetworkConnection.” The class internally has a lot of properties, methods and events. But, in the above example we concentrated only on some limited properties related to the “Win32_NetworkConnection” class.

The “for” loop I used in the above code iterates for every network connection mapped on your system and finally retrieves only the properties of that connection.

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

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