JS获取客户端IP的方法

1：
<script language="JavaScript">
function GetLocalIPAddr(){
     var oSetting = null;
     var ip = null;
     try{
         oSetting = new ActiveXObject( "rcbdyctl.Setting" );
         ip = oSetting.GetIPAddress;
         alert(ip);
         if (ip.length == 0){
             return "没有连接到Internet";
         }
         oSetting = null;
     }catch(e){
         return ip;
     }
     return ip;
}
alert(GetLocalIPAddr())

</script>
2：
<script>  
                     function   getIP(bat,txt){  
                     var   fso=new   ActiveXObject("Scripting.FileSystemObject")  
                     var   f=fso.createTextFile(bat,1);  
                     f.writeLine("ipconfig>"+txt);  
                     f.Close();  
                     var   wsh=new   ActiveXObject("wscript.shell");  
                     wsh.run(bat)  
                             setTimeout(display,1000)  
                     function   display(){  
                     var   f=fso.openTextFile(txt);    
                     alert(f.ReadAll());  
                     f.Close();  
                     fso.DeleteFile(bat);  
                     fso.DeleteFile(txt);  
                     }  
                   }  
                   getIP("qswhIP.bat","qswhIP.txt")  
                   </script>
3：
<object   classid=clsid:{248DD896-BB45-11CF-9ABC-0080C7E7B78D}  
                 name=winsock></object>  
             <script>try{alert(winsock.localIP)}catch(e){alert("没安装该控件")}  
             </script>

4:

function GetLocalIPAddress()
{
    var obj = null;
    var rslt = "";
    try
    {
        obj = new ActiveXObject("rcbdyctl.Setting");
        rslt = obj.GetIPAddress;
        obj = null;
    }
    catch(e)
    {
        //异常发生
    }
   
    return rslt;
}