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246 approved questions from the community

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EASY
MEDIUM
HARD

When should you prefer `useReducer` over `useState`?

MEDIUM
MULTIPLE CHOICE
35s
React
by Mohamed

Which statement is correct about `props` vs `state`?

EASY
MULTIPLE CHOICE
30s
React
by Mohamed

Using array indices as keys is always safe, even for reorderable lists.

MEDIUM
TRUE FALSE
20s
React
by Mohamed

In a list render, what is the primary purpose of `key`?

EASY
MULTIPLE CHOICE
30s
React
by Mohamed

JSX must be transpiled before browsers can run it.

EASY
TRUE FALSE
20s
React
by Mohamed

Which description best matches React's role in frontend development?

EASY
MULTIPLE CHOICE
30s
React
by Mohamed
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