viewchild trong angular code example

Example: viewchild for ngfor

<div *ngFor="let v of views">
    <customcomponent #cmp></customcomponent>
</div>

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import { ViewChildren, QueryList } from '@angular/core';

/** Get handle on cmp tags in the template */
@ViewChildren('cmp') components:QueryList<CustomComponent>; // or ElementRef if only need to grab element

ngAfterViewInit(){
    // print array of CustomComponent objects
    console.log(this.components.toArray());
}