javascript如何判断是手机还是电脑访问本网页

javascript如何判断是手机还是电脑访问本网页

 1  var system ={};   2     var p = navigator.platform;        3     system.win = p.indexOf("Win") == 0;   4     system.mac = p.indexOf("Mac") == 0;   5     system.x11 = (p == "X11") || (p.indexOf("linux") == 0);      6     if(system.win||system.mac||system.xll){//如果是电脑跳转到百度   7         window.location.href="http://www.baidu.com/";   8     }else{  //如果是手机,跳转到谷歌 9         window.location.href="http://www.google.cn/";  10     }