[javascript] How can I read the client's machine/computer name from the browser?

How can I read the client's machine/computer name from the browser?
Is it possible using JavaScript and/or ASP.NET?

This question is related to javascript asp.net computer-name

The answer is


Erm is there any reason why you can't just use the HttpRequest? This would be on the server side but you could pass it to the javascript if you needed to?

Page.Request.UserHostName

HttpRequest.UserHostName

The one problem with this is it would only really work in an Intranet environment otherwise it would just end up picking up the users Router or Proxy address...


An updated version from Kelsey :

$(function GetInfo() {
    var network = new ActiveXObject('WScript.Network');
        alert('User ID : ' + network.UserName + '\nComputer Name : ' + network.ComputerName + '\nDomain Name : ' + network.UserDomain);
        document.getElementById('<%= currUserID.ClientID %>').value = network.UserName;
        document.getElementById('<%= currMachineName.ClientID %>').value = network.ComputerName;
        document.getElementById('<%= currMachineDOmain.ClientID %>').value = network.UserDomain;
});

To store the value, add these control :

<asp:HiddenField ID="currUserID" runat="server" /> <asp:HiddenField ID="currMachineName" runat="server" /> <asp:HiddenField ID="currMachineDOmain" runat="server" />

Where you also can calling it from behind like this :

Page.ClientScript.RegisterStartupScript(this.GetType(), "MachineInfo", "GetInfo();", true);

There is no way to do so, as JavaScript does not have an access to computer name, file system and other local info. Security is the main purpose.


No this data is not exposed. The only data that is available is what is exposed through the HTTP request which might include their OS and other such information. But certainly not machine name.


<html>
<body onload = "load()">
<script>
  function load(){ 

     try {
       var ax = new ActiveXObject("WScript.Network");
       alert('User: ' + ax.UserName );
       alert('Computer: ' + ax.ComputerName);
     }
     catch (e) {
       document.write('Permission to access computer name is denied' + '<br />');
     } 
  }
</script>
</body>
</html>

Well you could get the ip address using asp.net, then do a reverse DNS lookup on the ip to get the hostname.

From the ASP.NET Developer's cookbook ... Performing a Reverse-DNS Lookup.


Try getting the client computer name in Mozilla Firefox by using the code given below.

netscape.security.PrivilegeManager.enablePrivilege( 'UniversalXPConnect' ); 

var dnsComp = Components.classes["@mozilla.org/network/dns-service;1"]; 
var dnsSvc = dnsComp.getService(Components.interfaces.nsIDNSService);
var compName = dnsSvc.myHostName;

Also, the same piece of code can be put as an extension, and it can called from your web page.

Please find the sample code below.

Extension code:

var myExtension = {
  myListener: function(evt) {

//netscape.security.PrivilegeManager.enablePrivilege( 'UniversalXPConnect' ); 
var dnsComp = Components.classes["@mozilla.org/network/dns-service;1"]; 
var dnsSvc = dnsComp.getService(Components.interfaces.nsIDNSService);
var compName = dnsSvc.myHostName;
content.document.getElementById("compname").value = compName ;    
  }
}
document.addEventListener("MyExtensionEvent", function(e) { myExtension.myListener(e); }, false, true); //this event will raised from the webpage

Webpage Code:

<html>
<body onload = "load()">
<script>
function showcomp()
{
alert("your computer name is " + document.getElementById("compname").value);
}
function load()
{ 
//var element = document.createElement("MyExtensionDataElement");
//element.setAttribute("attribute1", "foobar");
//element.setAttribute("attribute2", "hello world");
//document.documentElement.appendChild(element);
var evt = document.createEvent("Events");
evt.initEvent("MyExtensionEvent", true, false);
//element.dispatchEvent(evt);
document.getElementById("compname").dispatchEvent(evt); //this raises the MyExtensionEvent event , which assigns the client computer name to the hidden variable.
}
</script>
<form name="login_form" id="login_form">
<input type = "text" name = "txtname" id = "txtnamee" tabindex = "1"/>
<input type="hidden" name="compname" value="" id = "compname" />
<input type = "button" onclick = "showcomp()" tabindex = "2"/>

</form>
</body>
</html>

It is not possible to get the users computer name with Javascript. You can get all details about the browser and network. But not more than that.

Like some one answered in one of the previous question today.

I already did a favor of visiting your website, May be I will return or refer other friends.. I also told you where I am and what OS, Browser and screen resolution I use Why do you want to know the color of my underwear? ;-)

You cannot do it using asp.net as well.


Browser, Operating System, Screen Colors, Screen Resolution, Flash version, and Java Support should all be detectable from JavaScript (and maybe a few more). However, computer name is not possible.

EDIT: Not possible across all browser at least.


Examples related to javascript

need to add a class to an element How to make a variable accessible outside a function? Hide Signs that Meteor.js was Used How to create a showdown.js markdown extension Please help me convert this script to a simple image slider Highlight Anchor Links when user manually scrolls? Summing radio input values How to execute an action before close metro app WinJS javascript, for loop defines a dynamic variable name Getting all files in directory with ajax

Examples related to asp.net

RegisterStartupScript from code behind not working when Update Panel is used You must add a reference to assembly 'netstandard, Version=2.0.0.0 No authenticationScheme was specified, and there was no DefaultChallengeScheme found with default authentification and custom authorization How to use log4net in Asp.net core 2.0 Visual Studio 2017 error: Unable to start program, An operation is not legal in the current state How to create roles in ASP.NET Core and assign them to users? How to handle Uncaught (in promise) DOMException: The play() request was interrupted by a call to pause() ASP.NET Core Web API Authentication Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0 WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for jquery

Examples related to computer-name

How to get name of the computer in VBA? How can I read the client's machine/computer name from the browser?