import flash.events.MouseEvent;
var char:Array = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"];
trace(char.length);
stage.addEventListener(MouseEvent.CLICK, shengcheng);
function shengcheng(e){
var code:String = "";
for(var i:int=0; i<20; i++){
var index:int = int(Math.random() * char.length);
code = code + char[index];
}
trace(code);
}
//输出结果
gICppAfWNqniKyxOYXdN
nmgbnASvnhxGbISWdOxP
iyKjsvbMfCOazMCYvDnT
HNzPfQRIUuYXGmYKQFen
EberKmtHhEFsCQaUhOeM
xnJwXvLfsISppjTlwdLb
fbmtgUNpTpHcOBzbVfPT
YAVWjiIFfZNCOajewvnF
eIkQNNKwuNMJuiMbIoIi
LsNzcTlBSzcRdGPmSGcr