javascript/mac address.html

<html>
<head>
  <title>JS get MAC</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <meta name="generator" content="editplus"/>
  <script event="OnObjectReady(objObject,objAsyncContext)" for="foo">
    if (objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true) {
      if (objObject.MACAddress != null && objObject.MACAddress != "undefined" && objObject.DNSServerSearchOrder != null)
        MACAddr = objObject.MACAddress;
      if (objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined" && objObject.DNSServerSearchOrder != null)
        IPAddr = objObject.IPAddress(0);
      if (objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
        sDNSName = objObject.DNSHostName;
    }
  </script>
  <script type="text/javascript">
    var MACAddr;
    var IPAddr;
    var DomainAddr;
    var sDNSName;

    function init() {
      var service = locator.ConnectServer();
      service.Security_.ImpersonationLevel = 3;
      service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
    }

    function getMac() {
      document.getElementById('txtMac').value = unescape(MACAddr);
    }
  </script>
</head>
<body onLoad="init()">
<object id="locator" classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" VIEWASTEXT></object>
<object id="foo" classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223"></object>
<input type="text" id="txtMac"/>
<input type="button" id="btn" value="Mac" onClick="getMac()"/>
</body>
</html>