jquery用preventDefault阻止表单提交后无法触发提交了

Question

<script type="text/javascript">
        $(function(){
            $("#txtUserName").blur(function(){
                var userName = $("#txtUserName").val();
                if(userName.length<5)
                {
                    $("#dv1").html("<span class='nameNo'>用户名不能小于5位数！</span>");
                    $("#Button1").click(function(event){
                       event.preventDefault();
                    });
                }
                else
                {   
                    $.get("../process/checkUserName.ashx", { name: userName},
                    function(data){
                        $("#dv1").html(data);
                    });
                    
                    $("form").submit(function(){
                        return true;//这里不能触发form提交了
                    });
                    
                }  
            });
        });
    </script>如果用preventDefault阻止提交后 如何让Form 再次提交呢？  求教

Answer 1

  $("#Button1").click(function(event){
                       event.preventDefault();
                    });都event.preventDefault(); 还怎么提交在整个按钮