igxFocus の状態を返します。

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
let isFocusOn = this.igxFocus.focused;
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igxFocus の状態を設定します。

<igx-input-group >
 <input #focusContainer igxInput [igxFocus]="true"/>
</igx-input-group>
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igxFocus のネイティブ要素を取得します。

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
let igxFocusNativeElement = this.igxFocus.nativeElement;
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igxFocus 状態をトリガーします。

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
this.igxFocus.trigger();
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