Presentational vs container components

• quiz
• easy
• ui
• 5 min
• ui-props
• mark done

Which of the following best describes a presentational component?

Which of the following best describes a presentational component?

• A It manages state and interacts with Redux
• B It focuses on how things look and receives data via props
• C It is connected to the store using connect()
• D It contains lifecycle methods for data fetching

In React 19, a function component declares function Badge({ tone = "info" }) and the parent passes tone={undefined}. What happens?

In React 19, a function component declares `function Badge({ tone = "info" })` and the parent passes `tone={undefined}`. What does the component receive?

• A undefined — default parameters only apply when the prop is absent
• B "info" — a JavaScript default parameter applies whenever the argument is undefined, whether the prop was omitted or explicitly passed as undefined
• C An error, because defaultProps is required
• D null

Related

• Reading: Component · Props
• Agent Skill: ui-props