判断移动端设备: navigator.userAgent.toLowerCase()

function browserRedirect() {
   var _devices= navigator.userAgent.toLowerCase();
   var bIsIpad = _devices.match(/ipad/i) == "ipad";
   var bIsIphoneOs = _devices.match(/iphone os/i) == "iphone os";
   var bIsMidp = _devices.match(/midp/i) == "midp";
   var bIsUc7 = _devices.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
   var bIsUc = _devices.match(/ucweb/i) == "ucweb";
   var bIsAndroid = _devices.match(/android/i) == "android";
   var bIsCE = _devices.match(/windows ce/i) == "windows ce";
   var bIsWM = _devices.match(/windows mobile/i) == "windows mobile";
　　if(bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {
　　　　console.log("您是手机登录");
　　} else {　　
　　　　console.log("您是电脑登录");

　　}

}

 注：仅作为工作中需要笔记