React Quiz Set 2

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You can test your React skills with CodingStella’s Official Quiz.

The test is not official, it’s just a nice way to see how much you know, or don’t know, about React.

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React Quiz Set 1

Welcome to our Simple React Quiz – an enjoyable way to explore the basics of React, the language behind web development!

1 / 10

What is Redux in React?

A predictable state container for JavaScript applications

A routing library for React applications

A server-side rendering library for React

A built-in state management solution for React

2 / 10

What is a functional component in React?

A component that does not have its own state

A component that manages its own state

A component that is rendered using JSX syntax

A component that is defined using ES6 classes

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What is the significance of the shouldComponentUpdate lifecycle method in React?

It is called after the component has been rendered to the DOM

It is called when the component receives new props

It determines whether a component should be rendered or not

It is used to update the component's state

4 / 10

What is the purpose of the map method in React?

To define the structure of a component

To manage global state in React applications

To iterate over an array and render a component for each item

To handle routing and navigation in React applications

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How can you update the state of a component in React?

By using Redux actions

By calling the setState method

By passing props from a parent component

By directly modifying the state object

6 / 10

What is the purpose of the key prop in React?

To handle event listeners for a component

To improve the performance of list rendering

To specify a unique identifier for a component

To define inline styles for a component

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What is a prop drilling in React?

A way to handle asynchronous actions in React

A technique for optimizing React components

A debugging tool for React applications

A method for passing data from a parent component to a deeply nested child component

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What is the role of the componentDidMount lifecycle method in React class components?

It is called after the component has been rendered to the DOM

It is called before rendering the component

It is called when the component receives new props

It is called when the component's state changes

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What is the purpose of the className attribute in React?

To handle event listeners for a component

To apply CSS classes to a component

To specify a unique identifier for a component

To define inline styles for a component

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What is the Virtual DOM in React?

An alternative to CSS styling

A server-side rendering technique

A special type of JavaScript object

A virtual representation of the actual DOM

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