JS验证是手机登陆还是电脑

//平台、设备和操作系统 
var system = { 
    iphone: false, 
    x11: false, 
}; 
//检测平台 
var p = navigator.platform; 
//苹果手机
system.iphone = p.indexOf("iPhone") == 0; 
//X11 windows手机  Linux 安卓手机
system.x11 = (p == "X11") || (p.indexOf("Linux") == 0); 
//跳转语句
if (system.iphone || system.x11) { 
     window.location.href = "";
} else { 
    window.location.href = "";
}