[英]Pass value from Child component to Parent component , after child is initialized
現在我正在將值從子級傳遞給父級,同時單擊發送按鈕,如何傳遞相同的數組子級已初始化,我嘗試使用 'ngAfterViewInit' 但沒有奏效,這里有任何建議。
child
@Component({
selector: 'app-child',
templateUrl: './child.component.html'
})
export class ChildComponent {
cars = ["Saab", "Volvo", "BMW", "BMW", 'Saab'];
@Output() msEvent = new EventEmitter();
constructor() {}
send() {
this.msEvent.emit(this.cars);
}
// ngAfterViewInit() {
// this.msEvent.emit(this.cars);
// }
}
}
child.component.html : <button (click) = 'send()' class="button">send</button>
----------------------------------------
parent
@Component({
selector: 'app-root',
templateUrl: './app.component.html'
})
export class AppComponent {
cars:any[];
constructor() {
}
rece($event) {
this.cars = $event;
}
}
app.component.html : <app-child (msEvent) = 'rece($event)' [employees] = 'employees'></app-child>
ngOnInit() 應該足以滿足您的情況,因為您傳遞的數據不依賴於“視圖”。 在這里查看: StackBlitz 示例
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