React Quiz

React Quiz

University

10 Qs

quiz-placeholder

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React Quiz

React Quiz

Assessment

Quiz

Computers

University

Practice Problem

Hard

Created by

i right.

Used 1+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you initialize state in a React functional component using the useState hook?

let [state, setState] = useState(initialState);
const state = useState(initialState);
const [state, setState] = useState(initialState);
useState(initialState);

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to provide a unique key prop when rendering a list of elements using the map method in React?

It helps React efficiently update the DOM by identifying which items have changed, are added, or are removed.
It prevents bugs in the console log.
It improves the performance of the browser.
It makes the code more readable and organized.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you pass data from a parent component to a child component in React?

Using props

Using state

Using context

Using refs

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct command to create a new React project?

npx create-react-app project-name
npx start-react-app project-name
create-react-app project-name
npm start-react-app project-name

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct syntax to import a Component from React?

import Component from 'react';
import { Component } from 'react';;
import { Component } from 'React';
import { Component } from 'react';

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a correct way to apply inline styles to a React component?

Apply styles directly within the JSX using HTML style attribute
Use a separate CSS file and import it into the component
Use the style attribute with an object containing CSS properties as key-value pairs.
Pass a string of CSS properties to the style prop

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using keys in React when rendering a list of elements?

To style the elements in the list

To uniquely identify each element in the list

To hide certain elements from the DOM

To add event listeners to the elements

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