用ASP随机产生随机数

各位好今天我要告诉大家的是如何用ASP产生随机数。大家都知道大多数网站注册后

提供用户名和一个随机密码，但这个密码是如何产生的，现在我就向大家来介绍一下

请看下面的例子，用户可自行增加或减少随机的字符或数量。

<%
Function gen_key(digits)

@#Create and define array
dim char_array(50)
char_array(0) = "0"
char_array(1) = "1"
char_array(2) = "2"
char_array(3) = "3"
char_array(4) = "4"
char_array(5) = "5"
char_array(6) = "6"
char_array(7) = "7"
char_array(8) = "8"
char_array(9) = "9"
char_array(10) = "A"
char_array(11) = "B"
char_array(12) = "C"
char_array(13) = "D"
char_array(14) = "E"
char_array(15) = "F"
char_array(16) = "G"
char_array(17) = "H"
char_array(18) = "I"
char_array(19) = "J"
char_array(20) = "K"
char_array(21) = "L"
char_array(22) = "M"
char_array(23) = "N"
char_array(24) = "O"
char_array(25) = "P"
char_array(26) = "Q"
char_array(27) = "R"
char_array(28) = "S"
char_array(29) = "T"
char_array(30) = "U"
char_array(31) = "V"
char_array(32) = "W"
char_array(33) = "X"
char_array(34) = "Y"
char_array(35) = "Z"

@#Initiate randomize method for default seeding
randomize

@#Loop through and create the output based on the the variable passed to
@#the function for the length of the key.
do while len(output) < digits
num = char_array(Int((35 - 0 + 1) * Rnd + 0))
output = output + num
loop

@#Set return
gen_key = output
End Function

@#Write the results to the browser, currently setting a 13 digit key
response.write "<pre>" & gen_key(13) & "</pre>" & vbcrlf
%>

原文转自：http://www.ltesting.net