React and JavaScript Quiz

React and JavaScript Quiz

University

20 Qs

quiz-placeholder

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React and JavaScript Quiz

React and JavaScript Quiz

Assessment

Quiz

Professional Development

University

Medium

Created by

Karnam Bharath

Used 2+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does useEffect() do in React?

Fetches data from an API

Handles lifecycle events like componentDidMount

Renders components

Creates a new state

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a higher-order component (HOC)?

useState

withAuth(Component)

useEffect

ComponentDidMount

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which keyword is used to create a constant in ES6?

var

constant

const

static

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary use of the Redux Toolkit?

CSS styling

Simplifying Redux state management

Creating custom hooks

Building class-based components

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT true about pure functions?

They always return the same output for the same input

They do not cause side effects

They can modify global variables

They are easy to test

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does axios.post() return?

A response object

An object with a data property only

A pending fetch call

A Promise

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What’s the purpose of render() in class-based React components?

Run side effects

Return JSX

Update state

Destroy component

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