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。
1
2Function gen_key(digits)
3
4'Create and define array
5dim char_array(50)
6char_array(0) = "0"
7char_array(1) = "1"
8char_array(2) = "2"
9char_array(3) = "3"
10char_array(4) = "4"
11char_array(5) = "5"
12char_array(6) = "6"
13char_array(7) = "7"
14char_array(8) = "8"
15char_array(9) = "9"
16char_array(10) = "A"
17char_array(11) = "B"
18char_array(12) = "C"
19char_array(13) = "D"
20char_array(14) = "E"
21char_array(15) = "F"
22char_array(16) = "G"
23char_array(17) = "H"
24char_array(18) = "I"
25char_array(19) = "J"
26char_array(20) = "K"
27char_array(21) = "L"
28char_array(22) = "M"
29char_array(23) = "N"
30char_array(24) = "O"
31char_array(25) = "P"
32char_array(26) = "Q"
33char_array(27) = "R"
34char_array(28) = "S"
35char_array(29) = "T"
36char_array(30) = "U"
37char_array(31) = "V"
38char_array(32) = "W"
39char_array(33) = "X"
40char_array(34) = "Y"
41char_array(35) = "Z"
42
43'Initiate randomize method for default seeding
44randomize
45
46'Loop through and create the output based on the the variable passed to
47'the function for the length of the key.
48do while len(output) < digits
49num = char_array(Int((35 - 0 + 1) * Rnd + 0))
50output = output + num
51loop
52
53'Set return
54gen_key = output
55End Function
56
57'Write the results to the browser, currently setting a 13 digit key
58response.write "
<pre>" & gen_key(13) & "</pre>
1" & vbcrlf