问您可以为标准的ASP.NET表单验证器提供自定义的客户端javascript验证吗？

EN

/**
 * Re-assigns a couple of the ASP.NET validation JS functions to
 * provide a more flexible approach
 */
function UpgradeASPNETValidation(){
    // Hi-jack the ASP.NET error display only if required
    if (typeof(Page_ClientValidate) != "undefined") {
        ValidatorUpdateDisplay = NicerValidatorUpdateDisplay;
        AspPage_ClientValidate = Page_ClientValidate;
        Page_ClientValidate = NicerPage_ClientValidate;
   }
}

/**
 * Extends the classic ASP.NET validation to add a class to the parent span when invalid
 */
function NicerValidatorUpdateDisplay(val){
    if (val.isvalid){
        // do custom removing
        $(val).fadeOut('slow');
    } else {
        // do custom show
        $(val).fadeIn('slow');
    }
}

/**
 * Extends classic ASP.NET validation to include parent element styling
 */
function NicerPage_ClientValidate(validationGroup){
    var valid = AspPage_ClientValidate(validationGroup);

    if (!valid){
        // do custom styling etc
        // I added a background colour to the parent object
        $(this).parent().addClass('invalidField');
    }
}

  <script type="text/javascript">
        rfv.evaluationfunction = validator;

        function validator(sender, e) {
            alert('rawr');
        }
    </script>

<asp:CustomValidator ControlToValidate="txtBox" ClientValidationFunction="onValidate" />

<script type='text/javascript'>
function onValidate(sender, e)
 { 
     alert('do validation');
 }
</script>