怎么更改action路径，地址指向不对

在做Excel导出，提交表单的action路径地址总是不对，会多出Home，地址就会404，该如何解决

   $.ajax({
                            url: "/Home/download/",
                            type: "POST",
                            data: queryData,
                            dataType: "json",
                            success: function (result) {
                                $.messager.progress('close');
                                if (result.state == 1) {


                                    var $form = $('<form method="GET"></form>');

                                    $form.attr('action', 'Temp/PriceExcel/' + result.msg);

                                    $form.appendTo($('body'));
                                    $form.submit();
                                } else {
                                    $.show_warning("错误", result.msg);
                                }
                            }
                        });

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