问题
Thanks to parrycima, I created my first service.
results.service.ts
constructor(private httpService: HttpClient) {
}
async checkFunc() {
this.apiurl = 'https://my.apiurl.com/';
this.httpService.get(this.apiurl).subscribe(res => {
if (res) {
this.items = Object.keys(res).map(function(key) {
return res[key];
});
}
}, (err: HttpErrorResponse) => {
console.log (err.message);
}
);
}
app.component.ts
export class AppComponent {
constructor(
public myService: ResultsService,
private httpService: HttpClient
) {
this.myService.checkFunc();
}
app.component.html
<ion-content>
<ion-list *ngFor="let item of items">
<ion-item>{{item.operator}}
<div class="icon-status" slot="end">
<ion-icon name="{{item.status}}"></ion-icon>
</div>
</ion-item>
</ion-list>
</ion-content>
I can get object only in console mode, but not in HTML rendered.
https://i.stack.imgur.com/yD3mA.jpg
With the same function I can rendering HTML fine in result.page.ts.
回答1:
From your service return this.items
async checkFunc() {
this.apiurl = 'https://my.apiurl.com/';
await this.httpService.get(this.apiurl).subscribe(res => {
if (res) {
this.items = Object.keys(res).map(function(key) {
return res[key];
});
return this.items
}
}, (err: HttpErrorResponse) => {
console.log (err.message);
}
);
}
export class AppComponent {
items;
constructor(
public myService: ResultsService,
private httpService: HttpClient
) {
this.items = this.myService.checkFunc();
}
来源：https://stackoverflow.com/questions/60549888/render-json-in-html-from-service-ionic-4