检查clent side event是否返回true。如果它重新生成false，则停止服务器端事件触发

Check if clent side event returns true of flase. IF it restruns false then stop the server side event to fire

检查以下示例

 <script type="text/javascript">        function CheckValidate() {          IF it satisfies the condition then return true            return true;         else             return false;        }    </script>In Button  write like this<asp:Button ID="btnSubmit" runat="server" OnClientClick="return CheckValidate()" onclick="btnSubmit_Click" Text="Cleck Here" />