我遇到將新對象推送到現有陣列的問題。Angular 4 - >將對象推入陣列
我所試圖做的事 - > 我試圖拉推到現有數組的新卡/對象
app.component.ts
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'app';
deck: any;
cards = [];
hand = 0;
cardCount: number;
constructor(private _data: DataService){
console.log("Data Service ready to query api");
};
newDeck(){
this._data.newDeck().subscribe(res => this.deck = res.json());
}
deal(cardCount){
this._data.deal(cardCount, this.deck.deck_id).subscribe(response => this.cards = response.json());
if(this.cards){
this.cards.push(this.cards);
}
}
應用.component.html
<h1>New Game</h1>
<button (click)="newDeck()">Start</button>
<p>{{ deck.remaining }} cards left!</p>
<div>
<h2>Your Hand</h2>
<button (click)="deal(2)">Deal</button> <button (click)="deal(1)">Hit</button>
<img width="150" src="{{cards.cards[0].image}}">
<img width="150" src="{{cards.cards[1].image}}">
<img width="150" src="{{cards.cards[2].image}}">
<img width="150" src="{{cards.cards[3].image}}">
</div>
<!-- <div *ngFor="let card of cards">
<img src="{{card.cards.image}}" width="150px" style="padding: 50px; margin: 10px;">
</div> -->
是的 - 我的*ngFor
已損壞,因爲它似乎並不認爲這些卡片存儲在陣列中。
錯誤 - >嘗試比較'[object Object]'錯誤。只有陣列和迭代被允許
不過,我附上了正在發生的事情的截圖。我可以選擇交易按鈕,但是當我點擊Hit
時,計數器只會拉出1張卡,但它不會存儲在陣列中。相反,它作爲一個新對象,並顯示爲card.cards[0].image
而不是card.cards[2].image
,因爲單擊交易按鈕後已經有2個對象在數組中。
有關如何將新卡插入卡陣列的任何想法? Image
它可以幫助瞭解如何調用時的卡接收 - >
{
"remaining": 50,
"deck_id": "1omsivg9l9cu",
"success": true,
"cards": [
{
"image": "http://deckofcardsapi.com/static/img/KS.png",
"images": {
"svg": "http://deckofcardsapi.com/static/img/KS.svg",
"png": "http://deckofcardsapi.com/static/img/KS.png"
},
"suit": "SPADES",
"value": "KING",
"code": "KS"
},
{
"image": "http://deckofcardsapi.com/static/img/AH.png",
"images": {
"svg": "http://deckofcardsapi.com/static/img/AH.svg",
"png": "http://deckofcardsapi.com/static/img/AH.png"
},
"suit": "HEARTS",
"value": "ACE",
"code": "AH"
}
]
}
此行顯得有些棘手:' this.cards.push(this.cards);' –
這行應該改變嗎? –
真的不能說,我不知道,你想達到什麼目的。 –