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20 modules

Introduction to React

0/20 questions completed

1.beginner

What is React?

React is a JavaScript library for building user interfaces, especially interactive web applications. It uses reusable components to create and manage UI efficiently.

2.beginner

Why is React commonly used for web development?

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What is a React component?

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What is JSX in React?

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What are props in React?

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What is state in React?

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What is the difference between props and state?

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What is the useState Hook?

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What is the useEffect Hook?

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How does event handling work in React?

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What is conditional rendering in React?

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How do you render a list in React?

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Why are keys important when rendering lists in React?

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What is a React Fragment?

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What does lifting state up mean in React?

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What is one-way data flow in React?

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What is a controlled component in React?

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Can a child component directly modify its parent's state?

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Why should React state not be mutated directly?

20.beginner

Does every React render mean the entire DOM is replaced?

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