regular expression

I found the bottom regular expression for Date & Time Format dd-MMM-yyyy HH:mm:ss (24 hour)

I don't want the time part, I just need "dd-MMM-yyyy".  I need it for my form validation on a date field.

CAn someone please help modify this?

IsaacSharePoint Client Side DeveloperAsked:
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IsaacSharePoint Client Side DeveloperAuthor Commented:
That did not work..

see below.
<asp:TextBox ID="txt_DteIn" runat="server"></asp:TextBox><asp:RegularExpressionValidator
                    ID="RegularExpressionValidator1" runat="server" ErrorMessage="DD-MON-YYYY" ControlToValidate="txt_DteIn" ValidationExpression="^((31(?!([-])(Feb|Apr|June?|Sep|Nov)))|((30|29)(?!([-])Feb))|(29(?=([-])Feb([-])(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\d|2[0-8])([-])(Jan|Feb|Ma(r|y)|Apr|Ju(l|n)|Aug|Oct|(Sep|Nov|Dec))([-])((1[6-9]|[2-9]\d)\d{2})$"></asp:RegularExpressionValidator></asp:TableCell>

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it seems to be working fine for me. Are you sure you do not have leading and/or trailing spaces?
<script  type="text/javascript">

var re=/^((31(?!([-])(Feb|Apr|June?|Sep|Nov)))|((30|29)(?!([-])Feb))|(29(?=([-])Feb([-])(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\d|2[0-8])([-])(Jan|Feb|Ma(r|y)|Apr|Ju(l|n)|Aug|Oct|(Sep|Nov|Dec))([-])((1[6-9]|[2-9]\d)\d{2})$/

alert( re.test("7-Apr-2010 ") );//trailing space

alert( re.test("7-Apr-2010") );//NO trailing space


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Regular Expressions

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