javascript - Custom validator dynamic message -

i want custom validator dynamic messages. custom validator required field , regular expression. don't want use required field validator , regular expression validator creates more problems me. here javascript code

<script type="text/javascript">     function checkmytext(sender, args) {         var compare = regexp("^.{1,10}$");         args.isvalid = compare.test(args.value)             return;     } </script>  

here custom validator , text field code

<asp:textbox id="summary" runat="server" width="627px" cssclass="texrbox"></asp:textbox>  <asp:customvalidator id="customvalidator2" runat="server" clientvalidationfunction="checkmytext" controltovalidate="summary" errormessage="" text="*" validateemptytext="true"></asp:customvalidator> 

it working fine want show message when regular expression error fired only 10 characters allowed , required field want show required field. how it. want show bith messages in validation summary.

a validator renders <span> element in html. can use change error message.

document.getelementbyid('<%= customvalidator2.clientid %>').innerhtml = "my custom error msg"; 

or change errormessage:

<%= customvalidator2.clientid %>.errormessage = "error summary";