flex4.5生成验证码

    1 <?xml version="1.0" encoding="utf-8"?>
   

    2 <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
   

    3                xmlns:s="library://ns.adobe.com/flex/spark" 
   

    4                xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
   

    5     <fx:Declarations>
   

    6         <!-- Place non-visual elements (e.g., services, value objects) here -->
   

    7     </fx:Declarations>
   

    8     <fx:Script>
   

    9         <![CDATA[
   

   10             
   //
   生成验证码
   

   11 
               
   private 
   function createVerificationCode():
   String
   

   12             {
   

   13                 
   var numRandom:
   Number;
   

   14                 
   var number:
   Number;
   

   15                 
   var str:
   String = "";
   

   16                 
   var strVerificationCode:
   String="";
   

   17                 
   for(
   var i:int = 0; i < 6; i++)
   

   18                 {
   

   19                     numRandom = Math.random();                    
   

   20                     number = Math.round(numRandom*1000);                    
   

   21                     
   if(number % 2 == 0)
   

   22                     {
   

   23                         str = 
   String.fromCharCode(48 + (number % 10));                        
   

   24                     }
   

   25                     
   else
   

   26                     {
   

   27                         str = 
   String.fromCharCode(65 + (number % 26));
   

   28                     }
   

   29                     strVerificationCode +=str;
   

   30                 }
   

   31                 
   return strVerificationCode;
   

   32             }
   

   33         ]]>
   

   34     </fx:Script>
   

   35     <s:Label id="lblCode" text="{createVerificationCode()}" />
   

   36 </s:Application>