State & Data Flow interview questions

1. A.a bug where a callback or effect captures an outdated value due to a missing dependency
2. B.state computed from props or other state during render rather than stored separately
3. C.data flows down through props while events flow up through callbacks
4. D.a way to share values across the component tree without passing props at every level

Answer + AI explanation with Pro

1. A.Unidirectional data flow
2. B.Prop drilling
3. C.Stale closure
4. D.Update batching

Answer + AI explanation with Pro

1. A.Unidirectional data flow — state computed from props or other state during render rather than stored separately
2. B.Unidirectional data flow — a bug where a callback or effect captures an outdated value due to a missing dependency
3. C.Unidirectional data flow — data flows down through props while events flow up through callbacks
4. D.Unidirectional data flow — passing props through many intermediate components that don't themselves use them

Answer + AI explanation with Pro

1. A.state computed from props or other state during render rather than stored separately
2. B.passing props through many intermediate components that don't themselves use them
3. C.data flows down through props while events flow up through callbacks
4. D.a way to share values across the component tree without passing props at every level

Answer + AI explanation with Pro

1. A.Update batching
2. B.Context API
3. C.Prop drilling
4. D.Derived state

Answer + AI explanation with Pro

1. A.Prop drilling — data flows down through props while events flow up through callbacks
2. B.Prop drilling — a way to share values across the component tree without passing props at every level
3. C.Prop drilling — a bug where a callback or effect captures an outdated value due to a missing dependency
4. D.Prop drilling — passing props through many intermediate components that don't themselves use them

Answer + AI explanation with Pro

1. A.passing props through many intermediate components that don't themselves use them
2. B.state computed from props or other state during render rather than stored separately
3. C.data flows down through props while events flow up through callbacks
4. D.a way to share values across the component tree without passing props at every level

Answer + AI explanation with Pro

1. A.Stale closure
2. B.Prop drilling
3. C.Context API
4. D.Derived state

Answer + AI explanation with Pro

1. A.Context API — React grouping multiple state updates within an event into a single re-render
2. B.Context API — state computed from props or other state during render rather than stored separately
3. C.Context API — a way to share values across the component tree without passing props at every level
4. D.Context API — a bug where a callback or effect captures an outdated value due to a missing dependency

Answer + AI explanation with Pro

1. A.React grouping multiple state updates within an event into a single re-render
2. B.data flows down through props while events flow up through callbacks
3. C.state computed from props or other state during render rather than stored separately
4. D.passing props through many intermediate components that don't themselves use them

Answer + AI explanation with Pro

1. A.Update batching
2. B.Derived state
3. C.Stale closure
4. D.Context API

Answer + AI explanation with Pro

1. A.Derived state — data flows down through props while events flow up through callbacks
2. B.Derived state — passing props through many intermediate components that don't themselves use them
3. C.Derived state — a way to share values across the component tree without passing props at every level
4. D.Derived state — state computed from props or other state during render rather than stored separately

Answer + AI explanation with Pro

1. A.data flows down through props while events flow up through callbacks
2. B.React grouping multiple state updates within an event into a single re-render
3. C.state computed from props or other state during render rather than stored separately
4. D.a way to share values across the component tree without passing props at every level

Answer + AI explanation with Pro

1. A.Update batching
2. B.Context API
3. C.Prop drilling
4. D.Derived state

Answer + AI explanation with Pro

1. A.Update batching — a bug where a callback or effect captures an outdated value due to a missing dependency
2. B.Update batching — passing props through many intermediate components that don't themselves use them
3. C.Update batching — React grouping multiple state updates within an event into a single re-render
4. D.Update batching — state computed from props or other state during render rather than stored separately

Answer + AI explanation with Pro

1. A.passing props through many intermediate components that don't themselves use them
2. B.React grouping multiple state updates within an event into a single re-render
3. C.data flows down through props while events flow up through callbacks
4. D.a bug where a callback or effect captures an outdated value due to a missing dependency

Answer + AI explanation with Pro

1. A.Stale closure
2. B.Context API
3. C.Derived state
4. D.Prop drilling

Answer + AI explanation with Pro

1. A.Stale closure — state computed from props or other state during render rather than stored separately
2. B.Stale closure — a bug where a callback or effect captures an outdated value due to a missing dependency
3. C.Stale closure — React grouping multiple state updates within an event into a single re-render
4. D.Stale closure — passing props through many intermediate components that don't themselves use them

Answer + AI explanation with Pro