我有一个小问题,我不明白为什么...
情况:我当天有很多预订。我想,如果我点击“晚上”按钮,则只保留晚上的预订。
当单击按钮时,在父组件中调用getEvening()函数。
在我的子component.html中,我有:
<tbody *ngFor="let resa of resas">
<tr class="addred" (click)='setResa(resa)'>
<td *ngIf="!size">{{ resa.confirmResa }}</td>
<td>{{ resa.arrivee.split(' ')[1] }}</td>
<td>{{ resa.nom_client }}</td>
<td *ngIf="!size">{{ resa.nbre_client }}</td>
<td *ngIf="!size">{{ resa.num_phone_client }}</td>
<td *ngIf="!size">{{ resa.num_table }}</td>
<td *ngIf="!size">{{ resa.formule }}</td>
<td *ngIf="!size" (click)="stopEvent($event)" (mouseover)=setResaId(resa)>
<input class="venu" type="checkbox" clrToggle (change)="came($event)" [checked]="resa.venu === 1" />
</td>
</tr>
</tbody>
在我的子component.ts中,我有:
export class ReservationTabComponent implements OnInit {
@Input() date: Subject<string>;
@Output() resa = new EventEmitter<any>();
addred: boolean;
resas: any[] = [];
resaId: string;
dateDay: string;
hour: number;
scrHeight: number;
scrWidth: number;
size: boolean;
bool: boolean;
venu: number;
constructor(
private datastore: DatastoreService,
private resaService: ReservationService
) { }
ngOnInit(): void {
this.getScreenSize();
this.date.subscribe((date) => {
this.dateDay = date;
this.setDate(this.dateDay);
});
this.addred = false;
}
setDate(date: string) {
this.datastore.findResaOfTheDay(date)
.subscribe(
(resas) => {
this.resas = resas.data.original;
console.log(this.resas);
});
}
getAll() {
this.setDate(this.dateDay);
}
getMidi() {
this.resas = [];
}
getEvening() {
for (let resa of this.resas) {
this.hour = parseInt(moment().format(resa.arrivee.split(' ')[1]), 10);
if (this.hour > 13) {
this.resas.push(resa); <-- this causing infinite loop...
console.log(resa); <-- this works correctly
}
}
}
}
实际上,当我单击按钮时,我使用push()方法而不是console.log()方法有无限循环...
我不明白为什么...
您将更多元素推到要迭代的同一列表中,因此,每次推入元素时,都将对其进行迭代,然后再次推入并永久重复。
假设您匹配B:
v
[A,B,C]
v
[A,B,C] push B
v
[A,B,C,B]
v
[A,B,C,B] push B
v
[A,B,C,B,B] push B
v
[A,B,C,B,B,B] push B
您可能要使用两个不同的数组:)