回调不是功能完整的日历资源

Question

我试图将完整日历的资源作为函数

 callback is not a function

这是我的代码

$('#calendar').fullCalendar({

    resources: function (callback) {
        $.ajax({
            type: "POST",
            url: '../sales/Calendar.aspx/getResources',
            cache: false,
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (data) {
                var resourceObjects = [];
                $(data.d).each(function () {
                    resourceObjects.push({
                        id: this.id,
                        title: this.title,
                    });
                });
                callback(resourceObjects);
            },
            error: function (jqXHR, textStatus, errorThrown) {
                alert('There was an error');
            }
        });
    }

});

事件功能正在运行，但资源功能有问题。