ASP检测表单输入EMAIL的合法性

sunlei

1. function IsValidEmail(email)
3. dim names, name, i, c
5. 'Check for valid syntax in an email address.
7. IsValidEmail = true
8. names = Split(email, "@")
9. if UBound(names) <> 1 then
10. IsValidEmail = false
11. exit function
12. end if
13. for each name in names
14. if Len(name) <= 0 then
15. IsValidEmail = false
16. exit function
17. end if
18. for i = 1 to Len(name)
19. c = Lcase(Mid(name, i, 1))
20. if InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 and not IsNumeric(c) then
21. IsValidEmail = false
22. exit function
23. end if
24. next
25. if Left(name, 1) = "." or Right(name, 1) = "." then
26. IsValidEmail = false
27. exit function
28. end if
29. next
30. if InStr(names(1), ".") <= 0 then
31. IsValidEmail = false
32. exit function
33. end if
34. i = Len(names(1)) - InStrRev(names(1), ".")
35. if i <> 2 and i <> 3 then
36. IsValidEmail = false
37. exit function
38. end if
39. if InStr(email, "..") > 0 then
40. IsValidEmail = false
41. end if
43. end function

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