Regularity of asp matching URL

Determine whether it is the correct URL

Function IsValidUrl(str) 
 Dim regEx 
 Set regEx = New RegExp 
  = "http(s)?://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?" 
 IsValidUrl = (str) 
End Function

ASP regular expression parses out the domain name part in the URL

Function getDomain(domain)
    Dim re,ReturnStr,Matches
    Set re=new RegExp
     =True
    =True    
     = "(\w+\.(||com|cn|net|org))"
    Set Matches = (domain)
    ReturnStr = ""
    For Each Match in Matches
        ReturnStr = 
        Exit for
    Next
    getDomain = ReturnStr
    Set re=Nothing
End Function
 getDomain("///")

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