实现E-mail地址验证的vbs函数代码

实现E-mail地址验证的vbs函数代码

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-- 技术教程 (http://www.webasp.net/article/)
--- 实现E-mail地址验证的vbs函数代码 (http://www.webasp.net/article/13/12791.htm)

-- 作者：未知
-- 发布日期： 2004-09-02

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'函数名：IsValidEmail
'作用：检查Email地址合法性
'参数：email ----要检查的Email地址
'返回值：True ----Email地址合法
' False ----Email地址不合法
'**************************************************
function IsValidEmail(email)
dim names, name, i, c
IsValidEmail = true
names = Split(email, "@")
if UBound(names) <> 1 then
IsValidEmail = false
exit function
end if
for each name in names
if Len(name) <= 0 then
IsValidEmail = false
exit function
end if
for i = 1 to Len(name)
c = Lcase(Mid(name, i, 1))
if InStr("abcdefghijklmnopqrstuvwxyz_-.+", c) <= 0 and not IsNumeric(c) then
IsValidEmail = false
exit function
end if
next
if Left(name, 1) = "." or Right(name, 1) = "." then
IsValidEmail = false
exit function
end if
if Left(name, 1) = "+" or Right(name, 1) = "+" then
IsValidEmail = false
exit function
end if
next
if InStr(names(1), ".") <= 0 then
IsValidEmail = false
exit function
end if
if Left(names(1),1) ="+" 0 then
IsValidEmail = false
exit function
end if
if Right(names(1),1) ="+" 0 then
IsValidEmail = false
exit function
end if
i = Len(names(1)) - InStrRev(names(1), ".")
if i <> 2 and i <> 3 then
IsValidEmail = false
exit function
end if
if InStr(email, "..") > 0 then
IsValidEmail = false
end if
end function

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