如何使用ng-repeat访问数组中的对象?



我在使用 ng-repeat 时遇到问题。我正在使用带有TypeScript和HTML5的Ionic 2。我创建了一个对象数组,我需要在其中访问它的属性。它说"无法读取未定义的属性 c.getAttribute ",但是当我尝试不使用 ng-repeat 访问这些属性时(只是键入 array[0].getAttribute),一切正常。 这是我的代码:

<ion-list>
<ion-item ng-repeat="c in card">
<ion-card class="styledRow">
<ion-item class="cardHeaderClass">
<font size="4" style="color:#FFFFFF;">{{c.getExpiration}}</font>
<p>Monthly student</p>
</ion-item>
<ion-item class="rangeSlider">
<p style="color:white">Perm</p> 
<ion-badge color="blue" item-right>{{c.getPermValue}}/{{c.getTotalValue}}{{c.getDayEuro}}
</ion-badge>
</ion-item>
<ion-item class="rangeSlider">
<ion-range disabled="false" min="0" max="{{c.getTotalValue}}" step="1" [(ngModel)]="c.getPermValue" color="secondary">
<ion-icon range-left  name="close" color="danger"></ion-icon>
<ion-icon range-right  name="checkmark-circle-outline" color="secondary"></ion-icon>
</ion-range>
</ion-item>
<ion-row class="styledRow">
<ion-col>
<button ion-button icon-left color="#f4f4f4" clear small>
<ion-icon name="calendar"></ion-icon>
<div>Platnosť: {{c.getExpiration}}</div>
</button>
</ion-col>
</ion-row>
<div text-right="" class="styledRow">
<ion-note>Refreshed: 12.3.2017
</ion-note>
</div>
</ion-card>
</ion-item>
</ion-list>

这是我的打字稿:

export class HomePage {
card: permCard[];
constructor(public navCtrl: NavController) {
this.card = new Array();
for (let i = 0; i < 2; i++){
this.card.push(new permCard("Name","Name", 33, 40, " "+"days", "12.2.2017"));
}
}
}
export class permCard{
private centerName: string;
private permName: string;
private permValue: number;
private totalValue: number;
private dayEuro: string;
private expiration: string;
constructor(public center_name: string, public perm_name: string, public perm_value: number, public total_value: number,
public day_euro: string, public expiration_date: string){
this.centerName = center_name;
this.permName = perm_name;
this.permValue = perm_value;
this.totalValue = total_value;
this.dayEuro = day_euro;
this.expiration = expiration_date;
}
get getCenterName(): string {
return this.centerName;
}
get getPermValue(): number {
return this.permValue;
}
get getPermName(): string {
return this.permName;
}
get getTotalValue(): number {
return this.totalValue;
}
get getDayEuro(): string {
return this.dayEuro;
}
get getExpiration(): string {
return this.expiration;
}
}

我不知道,问题是否出在数组中,但只有 array.push 为我工作以初始化数组。请,你知道什么,应该是什么问题。打字稿和角度对我来说是新的,谢谢。

how-to-access-object-in-array-using-ng-repeat

你不能。ng-repeat是 Angularjs(版本 1)语法。 Ionic 2建立在角度2之上。

模板中 for 循环的格式为:

<ion-item *ngFor="let c of card">
<ion-card class="styledRow">
<!-- shortened for brevity -->
</ion-item>

文档 ngFor

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