1 window.onload = function () { 2 alert("1"); 3 var u = navigator.userAgent; 4 if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {
   //安卓手机 5 alert("安卓手机"); 6 // window.location.href = "mobile/index.html"; 7 } else if (u.indexOf('iPhone') > -1) {
   //苹果手机 8 // window.location.href = "mobile/index.html"; 9 alert("苹果手机");10 } else if (u.indexOf('Windows Phone') > -1) {
   //winphone手机11 alert("winphone手机");12 // window.location.href = "mobile/index.html";13 }14 }

摘自http://www.cnblogs.com/lyl6796910/p/3700151.html