js获取客户端网卡的、的方法。
代码：
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<html>
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<head>
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<title>js获取客户端网卡的IP地址与MAC地址---</title>
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</head>
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<body>
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<object classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" id="locator" style="display:none;visibility:hidden"></object>
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<object classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223" id="foo" style="display:none;visibility:hidden"></object>
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<form name="myForm">
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<br/>MAC地址：<input type="text" name="macAddress">
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<br/>IP地址：<input type="text" name="ipAddress">
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<br/>主机名：<input type="text" name="hostName">
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</form>
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</body>
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</html>
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<script language="javascript">
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var sMacAddr="";
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var sIPAddr="";
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var sDNSName="";
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var service = locator.ConnectServer();
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service.Security_.ImpersonationLevel=3;
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service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');
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</script>
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<script FOR="foo" EVENT="OnObjectReady(objObject,objAsyncContext)" LANGUAGE="JScript">
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if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true){
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if(objObject.IPEnabled && objObject.IPAddress(0) !=null && objObject.IPAddress(0) != "undefined" && objObject.DNSServerSearchOrder!=null)
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sIPAddr = objObject.IPAddress(0);
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if(objObject.MACAddress != null &&objObject.MACAddress != "undefined")
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sMacAddr = objObject.MACAddress;
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if(objObject.DNSHostName != null &&objObject.DNSHostName != "undefined")
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sDNSName = objObject.DNSHostName;
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}
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</script>
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<script FOR="foo" EVENT="OnCompleted(hResult,pErrorObject, pAsyncContext)" LANGUAGE="JScript">
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myForm.macAddress.value=sMacAddr;
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myForm.ipAddress.value=sIPAddr;
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myForm.hostName.value=sDNSName;
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</script>
以上代码源自网络，有修改。
原因是比如你笔记本有多张网卡，会出现获取你未联网或者禁用网卡的信息。
解决办法：加限制条件：
objObject.DNSServerSearchOrder!=null
加上这个限制条件后，就能取到联网客户端的网卡IP地址了。
不过还有个问题就是只能限制IE浏览器，而且Activex必须要全部启用。
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