I know that we can get the MAC address of a user via IE (ActiveX objects).
Is there a way to obtain a user's MAC address using JavaScript?
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mac-address
No you cannot get the MAC address in JavaScript, mainly because the MAC address uniquely identifies the running computer so it would be a security vulnerability.
Now if all you need is a unique identifier, I suggest you create one yourself using some cryptographic algorithm and store it in a cookie.
If you really need to know the MAC address of the computer AND you are developing for internal applications, then I suggest you use an external component to do that: ActiveX for IE, XPCOM for Firefox (installed as an extension).
Nope. The reason ActiveX can do it is because ActiveX is a little application that runs on the client's machine.
I would imagine access to such information via JavaScript would be a security vulnerability.
If this is for an intranet application and all of the clients use DHCP, you can query the DHCP server for the MAC address for a given IP address.
The quick and simple answer is No.
Javascript is quite a high level language and does not have access to this sort of information.
i was looking for the same problem and stumbled upon the following code.
How to get Client MAC address(Web):
To get the client MAC address only way we can rely on JavaScript and Active X control of Microsoft.It is only work in IE if Active X enable for IE. As the ActiveXObject is not available with the Firefox, its not working with the firefox and is working fine in IE.
This script is for IE only:
function showMacAddress() {_x000D_
var obj = new ActiveXObject("WbemScripting.SWbemLocator");_x000D_
var s = obj.ConnectServer(".");_x000D_
var properties = s.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration");_x000D_
var e = new Enumerator(properties);_x000D_
var output;_x000D_
output = '<table border="0" cellPadding="5px" cellSpacing="1px" bgColor="#CCCCCC">';_x000D_
output = output + '<tr bgColor="#EAEAEA"><td>Caption</td><td>MACAddress</td></tr>';_x000D_
while (!e.atEnd()) {_x000D_
e.moveNext();_x000D_
var p = e.item();_x000D_
if (!p) continue;_x000D_
output = output + '<tr bgColor="#FFFFFF">';_x000D_
output = output + '<td>' + p.Caption; +'</td>';_x000D_
output = output + '<td>' + p.MACAddress + '</td>';_x000D_
output = output + '</tr>';_x000D_
}_x000D_
output = output + '</table>';_x000D_
document.getElementById("box").innerHTML = output;_x000D_
}_x000D_
_x000D_
showMacAddress();
_x000D_
<div id='box'></div>
_x000D_
Source: Stackoverflow.com