JAVASCRIPT产生随机函数

 1   < script type = " text/javascript " >
 2         function CreateUserID()
 3          {
 4            var hotelID=document.getElementById("txtHotelID");
 5            var userID=document.getElementById("txtUserID");
 6            var sRand="";
 7            for(var i=0;i<4;i++)
 8            {
 9                sRand=sRand + (parseInt(Math.random()*9)).toString(); 
10
11            }
12            userID.value=hotelID.value + sRand;
13        }
14         
15      </ script >

转载于:https://www.cnblogs.com/zhangchenliang/archive/2008/02/22/1078240.html