JS判断客户端是手机还是PC的代码

已用证实有效

<script type="text/javascript">
    var system ={};  
        var p = navigator.platform;       
        system.win = p.indexOf("Win") == 0;  
        system.mac = p.indexOf("Mac") == 0;  
        system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);     
       if(system.win||system.mac||system.xll){//如果是电脑跳转到

        }else{  //如果是手机,跳转到
               window.location.href="http://www.radio.gov.cn/wap 

        }
 script>