db_isform.asp

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<%
function Isform(values,types,forms)
dim valses
values=trim(values)
	if trim(values)="" then
		response.write "<script language=JavaScript>alert('["&forms&"] 不可以为空！');history.back();</script>"
		response.End()
	end if
	select case types
	case "数字"
		if not isnumeric(values) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是数字！');history.back();</script>"
			response.End()
		end if
		valses=int(valses)
	case "汉字"
		For i = 1 To Len(valses)
		If Asc(Mid(valses, i, 1)) < 0 Then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是汉字！');history.back();</script>"
			response.End()
		exit for
		End If
		Next
	case "字符"
		if not IsEnglish(valses) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是字符！');history.back();</script>"
			response.End()
		end if
	case "中英"
		For i = 1 To Len(valses)
		If Asc(Mid(valses, i, 1)) < 0 or not IsEnglish(Mid(valses, i, 1))Then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是汉字或者英文！');history.back();</script>"
			response.End()
		exit for
		End If
		Next
	case "邮件"
		if not IsValidEmail(values) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是正确的email地址！');history.back();</script>"
			response.End()
		end if
	case "日期"
		if not isdate(values) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是正确的日期格式 2002-11-19！');history.back();</script>"
			response.End()
		end if
	case "身份证"
		if not isnumeric(values) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是数字！');history.back();</script>"
			response.End()
		else
			if len(values)<>15 and len(values)<>18 then
				response.write "<script language=JavaScript>alert('["&forms&"] 必须是15或者18位数字！');history.back();</script>"
				response.End()
			end if
		end if
	case "邮编"
		if not isnumeric(values) then
			response.write "<script language=JavaScript>alert('["&forms&"] 必须是数字！');history.back();</script>"
			response.End()
		else
			if len(values)<>6 then
				response.write "<script language=JavaScript>alert('["&forms&"] 必须是6位数字！');history.back();</script>"
				response.End()
			end if
		end if
	end select
Isform=values
end function

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
next
if InStr(names(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


function IsEnglish(str)
on error resume next

dim n,i,l

n = Cstr(str)
IsEnglish = true

if isnull(str) then
IsEnglish = false
exit function
end if

l = len(n)
for i=1 to l
if (mid(n,i,1)<chr(65) or mid(n,i,1)>chr(90)) and (mid(n,i,1)<chr(97) or mid(n,i,1)>chr(122)) then
IsEnglish = false
exit function
exit for
end if
next

if err.number<>0 then err.clear
end function
%>