Composition vs Inheritance – React

These docs are old and won’t be updated. Go to react.dev for the new React docs. React has a powerful composition model, and we recommend using composition instead of inheritance to reuse code between components. In this section, we will consider a few problems where developers new to React often reach for inheritance, and show how we can solve them with composition. Containment Some components do

[oukayuka]

Reactコンポーネントを拡張・再利用するときは（クラス）継承ではなくcompositionを使うの推奨という公式見解の説明。

[side_tana]

Dynamic Children、おっそうだな? って感じだった

[efcl]

ReactのリストアイテムのComponent作成について。 keyはReact Componentに付けるべきで、li自体に付けるものじゃないという話