如何在ajax方法的数据中传递null作为变量的值

Question

我想在“mailID”字段中发送空值，因为电子邮件ID不是表单中的必填字段。

var app = angular.module('MyApp', [])
app.controller('MyController', function($scope, $http, $window) {
    $scope.ButtonClick = function() {
        var post = $http({
            method: "POST",
            url: "url",
            dataType: 'json',
            data: {
                name: $scope.Name,
                mailID: $scope.MailID,
            },
            headers: {
                "Content-Type": "application/json"
            }
        });
        post.success(function(data, status) {
            $window.alert(data.d);
        });
        post.error(function(data, status) {
            $window.alert(data.Message);
        });
    }
});

Answer 1

如果未设置create procedure get_some_stuffs @max_records int = null as begin set NOCOUNT on IF @max_records IS NOT NULL BEGIN SET ROWCOUNT @max_records END select top (@max_records) * from my_table order by mothers_maiden_name SET ROWCOUNT 0 end ，请不要将其发送到MailID对象。 您的服务器需要检查data是否可用。

MailID