<%
' Function IsEmailValid(strEmail)
' Action: checks if an email is correct.
' Parameter: strEmail - the Email address
' Returned value: on success it returns True, else False.
Function IsEmailValid(strEmail)
Dim strArray
Dim strItem
Dim i
Dim c
Dim blnIsItValid
' assume the email address is correct
blnIsItValid = True
' split the email address in two parts: name@domain.ext
strArray = Split(strEmail, "@")
' if there are more or less than two parts
If UBound(strArray) <> 1 Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
' check each part
For Each strItem In strArray
' no part can be void
If Len(strItem) <= 0 Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
' check each character of the part
' only following "abcdefghijklmnopqrstuvwxyz_-."
' characters and the ten digits are allowed
For i = 1 To Len(strItem)
c = LCase(Mid(strItem, i, 1))
' if there is an illegal character in the part
If InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 And Not IsNumeric(c) Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
Next
' the first and the last character in the part cannot be . (dot)
If Left(strItem, 1) = "." Or Right(strItem, 1) = "." Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
Next
' the second part (domain.ext) must contain a . (dot)
If InStr(strArray(1), ".") <= 0 Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
' check the length oh the extension
i = Len(strArray(1)) - InStrRev(strArray(1), ".")
' the length of the extension can be only 2, 3, or 4
' to cover the new "info" extension
If i <> 2 And i <> 3 And i <> 4 Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
' after . (dot) cannot follow a . (dot)
If InStr(strEmail, "..") > 0 Then
blnIsItValid = False
IsEmailValid = blnIsItValid
Exit Function
End If
' finally it's OK
IsEmailValid = blnIsItValid
End Function
%>
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No Wa/Telepon (fajar) : 085369237896
Email: Fajarudinsidik@gmail.com
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