<script type="text/javascript">
(function(){
var user = navigator.userAgent;
var Agents = ["Android","Linux","iPhone"];
var flag = false;
for (var i = 0;i<Agents.length;i++) {
if (user.indexOf(Agents[i]) > 0){
flag = true;
}
}
if(flag == true){
location = "手机域名";
}
})();
</script>
加在head标签里面