我想顯示在DOM中的一些信息,但我得到這個錯誤:Angular4錯誤嘗試的差異「的翻譯:」
Error: Error trying to diff '[object Object]'
什麼即時試圖做的是疊代從https://www.surbtc.com/api/v2/markets/btc-clp/ticker該數據:
{"ticker":{"last_price":["1771455.0","CLP"],"min_ask":["1771432.0","CLP"],"max_bid":["1660003.0","CLP"],"volume":["178.37375119","BTC"],"price_variation_24h":"-0.107","price_variation_7d":"-0.115"}}
我想在HTML這樣顯示的:
<div *ngFor="let price of prices">
{{price.min_ask}}
</div>
這是service.ts :
import { Injectable } from '@angular/core';
import { Http, Headers, Response } from '@angular/http';
import 'rxjs/add/operator/toPromise';
import {Observable} from "rxjs";
import 'rxjs/Rx';
import 'rxjs/add/operator/catch';
import { SurbtcMarket } from './surbtcmarket'
@Injectable()
export class SurbtcService {
constructor(private http: Http, private surBtcMarket : SurbtcMarket) { }
public getPricess() :Observable<SurbtcMarket> {
return this.http.get('https://www.surbtc.com/api/v2/markets/btc-clp/ticker')
.map((response: Response) => response.json());
}
}
接口surbtcmarket.ts
export class SurbtcMarket {
public ticker: SurbtcMarketView[];
}
export class SurbtcMarketView {
public last_price : number;
public min_ask : number;
public max_bid : number;
public volume : number;
public price_variation_24h : number;
public price_variation_7d : number;
}
component.ts
import { Http, Response, Headers } from '@angular/http';
import { SurbtcService } from '../../surbtc/surbtc.service';
import {Observable} from "rxjs";
@Component({
selector: 'app-comprarltc',
templateUrl: './comprarltc.component.html',
styleUrls: ['./comprarltc.component.scss']
})
export class ComprarltcComponent implements OnInit {
private prices = [];
constructor(private surbtcService: SurbtcService) {
this.surbtcService = surbtcService;
}
ngOnInit(){
this.surbtcService.getPricess()
.subscribe(
data => this.prices = data.ticker
);
}
}
感謝您的幫助!我只是在學習。
[錯誤嘗試差異\ [object Object \]'](https://stackoverflow.com/questions/38216857/error-trying-to-diff-object-object) –
您可能得到的回覆從'https:// www.surbtc.com/api/v2/markets/btc-clp/ticker'不是JSON數組,而是JSON對象(在您的案例中爲'SurbtcMarket'的1個實例)。你不能在對象上使用'* ngFor',因爲你不能遍歷它。 –
@NicoVanBelle謝謝你的回覆。有沒有辦法將該對象轉換爲數組? –