正则表达式检测用户输入的email地址是否合法，正则表达式email

正则表达式检测用户输入的email地址是否合法，正则表达式email

var emailStr=document.form1.email.value;
var emailPat=/^(.+)@(.+)$/;
var matchArray=emailStr.match(emailPat);
if (matchArray==null)
{
alert("Please review email's format!")
return false;
}
 

一定要用正则吗，不用的话可以试试下面的函数

'*************************************
'检测是否有效的E-mail地址
'*************************************
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

'*************************************
'用户名检测
'*************************************
Function IsValidUserName(byVal UserName)
on error resume next
Dim i,c
Dim VUserName
IsValidUserName = True
For i = 1 To Len(UserName)
c = Lcase(Mid(UserName, i, 1))
If InStr("$!<>?#^%@~`&*();:+='""? &......余下全文>>