Advanced JavaScript with Internet Explorer: Retrieving Networking Configuration Information - How to retrieve network connection information using JavaScript
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Now, let us try to develop a simple script (JavaScript) which shows the technique for retrieving all the network connections mapped to your system. 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_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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