【转】ActionScript中如何随机生成验证码 

 1                 var ran:Number;
 2                 var code:String;
 3                 var checkcode:String="";
 4                 var num:Number;
 5                 for(var i:int=0;i<4;i++){
 6                     ran=Math.random();
 7                     num=Math.round(ran*10000);
 8                     if(num%2==0)
 9                         code=String.fromCharCode(48+(num%10));
10                     
11                     else
12                         code=String.fromCharCode(65+(num%26));
13                 
14                     checkcode +=code;
15                 }
16                 return checkcode;

 

posted @ 2012-03-11 13:43  简道云  阅读(316)  评论(0)  编辑  收藏  举报