在asp.net中，按钮onclick和onclientclick不能用于javascript中的alert和confirm方法。

Question

<asp:Button ID="btnSubmit" runat="server" style=" float:left"  Text="Submit" `OnClientClick="submitRequest();" onclick="btnSubmit_Click" TabIndex="8"/>`

和

<script type="text/javascript">
function submitRequest() {
            var hdn_YearlyAvailableFund = parseFloat("<%= hdnYearlyAvailableFund.Value %>");

            var hdn_Amount = parseFloat("<%= hdnAmount.Value %>");
            var hdn_QueryString = "<%= hdnQueryString.Value %>";
            var approve = document.getElementById("<%=rdbApprove.ClientID %>");
            var check = approve.checked;
            if (hdn_QueryString.toString() == 'X') {
                if (approve.checked == true) {
                    if (hdn_YearlyAvailableFund < hdn_Amount) {
                        alert('Yearly available fund is less than Requested Amount, Cannot approve...!')                           
                    }
                    else {
                        if (confirm('Are you sure want to update this request?'))
                            document.getElementById('<%= btnSubmit.ClientID  %>').click();
                    }
                }
            }
            else {
                if (confirm('Are you sure want to update this request?')) {
                    document.getElementById('<%= btnSubmit.ClientID  %>').click();
                }
            } 
        }

    </script>

在我的代码中，警报和确认方法不能一起工作。

我请求给我一个解决方案。先谢谢你。