ASP的解码函数

server.URLEncode 相对应的函數

<script language="vbscript">
function URLDecode(enStr)
dim deStr,strSpecial
dim c,i,v
  deStr=""
  strSpecial="!""#$%&'()*+,.-_/:;<=>?@[\]^`{|}~%"
  for i=1 to len(enStr)
    c=Mid(enStr,i,1)
    if c="%" then
      v=eval("&h"+Mid(enStr,i+1,2))
      if inStr(strSpecial,chr(v))>0 then
        deStr=deStr&chr(v)
        i=i+2
      else
        v=eval("&h"+ Mid(enStr,i+1,2) + Mid(enStr,i+4,2))
        deStr=deStr & chr(v)
        i=i+5
      end if
    else
      if c="+" then
        deStr=deStr&" "
      else
        deStr=deStr&c
      end if
    end if
  next
  URLDecode=deStr
end function

dim str
str= "http%3A%2F%2Ffree%2E21cn%2Ecom%2Fforum%2Fthread%2Ejsp%3Fforum%5Fid%3D621%26thread%5Fid%3D745761%26forum%5Fname%3D%26%23431%3BMM%26ispoll%3D0%26views%3D1236%26title%3D%26%23569%3B"
msgbox URLDecode(str)
</script