[Angular] ExpressionChangedAfterItHasBeenCheckedError への2つの対処法 - Qiita[Angular] ExpressionChangedAfterItHasBeenCheckedError への2つの対処法AngularAngular2Angular4Angular5 ERROR Error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: 'something: null'. Current value: 'something: something'. Componentを入れ子構造にしているとよく見るこのエラー どうも、子供のComponentから親Componentを変更しようとすると発生するようだ。 Angularでは、子供のComponentからの親の変更を基本的に禁止しているので、こういうことが出
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