验证二有问题，总是等于零。

我的代码如下：

 $(function () {
                $.ajaxSetup({
                    type:'POST',
                    dataTpye:'text',
                    success:function(data){
                        $("ul").append("<li>你输入的<b>  "
                            + $("#txtNumber").val() + " </b>是<b> "
                            + data + " </b></li>");
                    }
                });
                $("#btnShow_1").bind("click", function () {
                    $.ajax({
                        num: $("#txtNumber").val(),
                        url: "http://www.imooc.com/data/check.php"
                    });
                })
                $("#btnShow_2").bind("click", function () {
                    $.ajax({
                        num: $("#txtNumber").val(),
                        url: "http://www.imooc.com/data/check_f.php"
                    });
                })
            });