<script type="text/javascript"> //平台、设备和操作系统 var system ={ win : false, mac : false, xll : false }; //检测平台 var p = navigator.platform; alert(p); /**var sUserAgent = navigator.userAgent.toLowerCase(); alert(sUserAgent);*/ system.win = p.indexOf("Win") == 0; system.mac = p.indexOf("Mac") == 0; system.x11 = (p == "X11") || (p.indexOf("Linux") == 0); //跳转语句 if(system.win||system.mac||system.xll){//转向后台登陆页面 window.location.href="http://www.baidu.com"; }else{ window.location.href="http://t.qq.com"; } </script>