jQuery唯一性验证

$(document).ready(function(){
	$("#submitBoutton").bind("click",function(){
		$("#form").attr("action","Users_addUsers.action").attr("method","post").submit();
	})
	
	$("#userName").bind("blur",function(){
		$.post("Users_checkUserName.action",{userName:$("#userName").val()},function(date){
			var status=data.status;
			if(status==1){
				alert("次用户名以用,请重新填写!");
				$("#submitBoutton").unbind("click");
				$("#userName").focus();
			}else{
				$("#submitBoutton").bind("click",function(){
					$("#form").attr("action","Users_addUsers.action").attr("method","post").submit();
				})
			}
		},"json")
	})
})