js判断手机端Android手机还是iPhone手机

/*判断当前设备是平板、安卓、苹果设备*/

<script type="text/javascript">

function fBrowserRedirect(){ 
　　var sUserAgent = navigator.userAgent.toLowerCase(); 
　　alert(sUserAgent);  //获取浏览器和手机的信息
　　//匹配信息里的关键字
　　var bIsIpad = sUserAgent.match(/ipad/i) == "ipad"; 
　　var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
　　var bIsAndroid = sUserAgent.match(/android/i) == "android";

　　var bIsMidp = sUserAgent.match(/midp/i) == "midp"; 
　　var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4"; 
　　var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb"; 
　　var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce"; 
　　var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile"; 
　　if(bIsIpad){ 
　　　　alert('Ipad'); 
　　　　//执行Ipad操作
　　} 
　　if(bIsIphoneOs){ 
　　　　alert('Iphone');
　　　　//执行Iphone操作
　　} 
　　if(bIsAndroid){ 
　　　　alert('Android');
　　　　//执行android操作
　　}
}

fBrowserRedirect();

</script>

　　

/*判断当前设备是电脑、手机、平板*/

<script type="text/javascript">
var bForcepc = fGetQuery("dv") == "pc";
function fBrowserRedirect(){
 var sUserAgent = navigator.userAgent.toLowerCase();
 var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
 var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
 var bIsMidp = sUserAgent.match(/midp/i) == "midp";
 var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
 var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
 var bIsAndroid = sUserAgent.match(/android/i) == "android";
 var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
 var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
 if(bIsIpad){
  var sUrl = location.href; 
  if(!bForcepc){
   window.location.href = "http://m.xxx.com/?ipad";
  }
 }
 if(bIsIphoneOs || bIsAndroid){
  var sUrl = location.href; 
  if(!bForcepc){
   window.location.href = "http://m.xxx.com/?iphone";
  }
 }
 if(bIsMidp||bIsUc7||bIsUc||bIsCE||bIsWM){
  var sUrl = location.href; 
  if(!bForcepc){
   window.location.href = "http://m.xxx.com/";
  }
 }
}
function fGetQuery(name){//获取参数值
 var sUrl = window.location.search.substr(1);
 var r = sUrl.match(new RegExp("(^|&)" + name + "=([^&]*)(&|$)"));
 return (r == null ? null : unescape(r[2]));
}
function fShowVerBlock(){
 if(bForcepc){
  document.getElementById("dv_block").style.display = "block";
 }
 else{
  document.getElementById("ad_block").style.display = "block";
 }
}
fBrowserRedirect();
</script>