javascript 读取客户端MAC地址、IP地址、主机名称

<SCRIPT language="javascript" event="OnObjectReady(objObject,objAsyncContext)" for="foo">
if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true)
{
if(objObject.MACAddress != null && objObject.MACAddress != "undefined")
MACAddr = objObject.MACAddress;
if(objObject.IPEnabled && objObject.IPAddress(0) != null && objObject.IPAddress(0) != "undefined")
IPAddr = objObject.IPAddress(0);
if(objObject.DNSHostName != null && objObject.DNSHostName != "undefined")
sDNSName = objObject.DNSHostName;
}
</SCRIPT>

<OBJECT id="locator" classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6"></OBJECT>
<OBJECT id="foo" classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223"></OBJECT>

<SCRIPT language="javascript">
var service = locator.ConnectServer();
var MACAddr ;
var IPAddr ;
var DomainAddr;
var sDNSName;
service.Security_.ImpersonationLevel=3;
service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
</SCRIPT>

<INPUT type="text" id="txtMACAddr" />
<INPUT type="text" id="txtIPAddr" />
<INPUT type="text" id="txtDNSName" />

<SCRIPT language="javascript" event="OnCompleted(hResult,pErrorObject, pAsyncContext)" for="foo">
document.getElementById("txtMACAddr").value=unescape(MACAddr);
document.getElementById("txtIPAddr").value=unescape(IPAddr);
document.getElementById("txtDNSName").value=unescape(sDNSName);
</SCRIPT>