Javascript Typescript无法推送到knockoutObservableArray,因为即使在初始化之后也未定义
我正在使用asp.NETMVC5和typescript。在我的viewmodel中,我试图将ajax调用中接收的数据从api推送到knockoutObservable数组。即使我的数组是initilizeor,至少我认为它应该是 错误:TypeError:无法读取未定义的属性“push” 这是我的密码:Javascript Typescript无法推送到knockoutObservableArray,因为即使在初始化之后也未定义,javascript,asp.net-mvc,typescript,knockout.js,undefined,Javascript,Asp.net Mvc,Typescript,Knockout.js,Undefined,我正在使用asp.NETMVC5和typescript。在我的viewmodel中,我试图将ajax调用中接收的数据从api推送到knockoutObservable数组。即使我的数组是initilizeor,至少我认为它应该是 错误:TypeError:无法读取未定义的属性“push” 这是我的密码: module Models { export class ReservationDay { date: KnockoutObservable<Date>; pla
module Models {
export class ReservationDay {
date: KnockoutObservable<Date>;
place: KnockoutObservable<string>;
avaibleSlots: KnockoutObservable<number>;
instructorId: KnockoutObservable<string>;
constructor(date: Date, place: string, avaibleSlots: number, instructorId: string) {
this.date = ko.observable(date);
this.place = ko.observable(place);
this.avaibleSlots = ko.observable(avaibleSlots);
this.instructorId = ko.observable(instructorId);
}
}
}
module ViewModel {
import ReservationDay = Models.ReservationDay;
export class Calendar {
public days: KnockoutObservableArray<ReservationDay> = ko.observableArray<ReservationDay>();
constructor() {
this.getMonthCalendar(new Date());
}
getMonthCalendar(date: Date) {
var month = date.getMonth() + 1;
$.ajax({
url: 'myApiUrl' + month,
type: 'GET',
dataType: 'json',
async: false,
success(data, textStatus, xhr) {
if (data.length > 0) {
for (var i = 0; i < data.length; i++) {
console.log(this.days); // here is undefined
this.days.push(new ReservationDay(data[i].date,data[i].place,data[i].avaibleSlots, data[i].instructorId)); // in this line : error : TypeError: Cannot read property 'push' of undefined
}
console.log("ajax done.");
}
},
error(xhr, textStatus, errorThrown) {
console.log('Error in Operation');
}
});
}
以下是我的观点:
@section Scripts{
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/knockout")
@Scripts.Render("~/bundles/bootstrap")
@Scripts.Render("~/bundles/calendar")
<script type="text/javascript">
$(function () {
var vm = new ViewModel.Calendar(@Model);
ko.applyBindings(vm);
});
</script>
}
还有一个问题,有人能告诉我如何使用ReservationDay.ts类吗?该类位于其他文件夹中,不在具有上述viewmodel的文件中
提前谢谢你 因为ajax success中的这一点并不是指日历的实例,而是指ajax设置对象
您可以通过在ajax外部添加对日历实例的引用来解决此问题:
getMonthCalendar(date: Date) {
var self = this;
$.ajax({
........
........
success: (data, textStatus, xhr) => {
if (data.length > 0) {
for (var i = 0; i < data.length; i++) {
self.days.push((new ReservationDay(data[i].date,data[i].place,data[i].avaibleSlots, data[i].instructorId));
}
}
}
})
}
要在结构中导入ReservationDay类,可以执行以下操作:
import {ReservationDay} from "../viewmodel/calendar"
谢谢你,成功了!你知道我第二个问题的答案吗?如何将模型放在单独的文件中?
import {ReservationDay} from "../viewmodel/calendar"