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ReactJs Quiz

by | Nov 19, 2022 | Assessment, Interview

0

ReactJs Quiz

An MCQ Quiz for ReactJs Interviewers

1 / 30

The useReducer Hook is similar to

2 / 30

The useCallBack() returns

3 / 30

_________ is an array method that renders a list with some type of loop.

4 / 30

Which command is used to run react app?

5 / 30

To pass an argument to the event handler, we must use

6 / 30

The below syntax is an example of useEffect(, )

7 / 30

Which is the correct react event handler?

8 / 30

Which of these is a the correct way to import useState?

9 / 30

Which is the correct react event name?

10 / 30

React props are

11 / 30

What is Sass styling?

12 / 30

Components can be passed as

13 / 30

The below code is an example of? const Header = () => {
return (
<>

Hello World!

Add a little style!


);
}

14 / 30

How can we include CSS in React?

15 / 30

Inside the JSX, if statement should be replaced by

16 / 30

The below code is an example of?

17 / 30

What is JSX?

18 / 30

Identify the error in the code below. function Eat(props) {
return

I am a { props+fruit}!

;
}

const myElement = ;

19 / 30

_________ is the HTML element where you want to display the result.

20 / 30

What will be the output of the code below? const x = 5;
let text = "GoodNight";
if (x < 10) { text = "Good Morning"; }

21 / 30

Which of these is valid?

22 / 30

The syntax of the ternary operator is

23 / 30

What will be the output of the code below? import React from 'react';
import ReactDOM from 'react-do/main';

const myElement = (

Good Morning.

Have a nice day.

);

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(myElement);

24 / 30

What will be the output of the code below? import React from 'react';
import ReactDOM from 'react-dom/client';

const myElement =

React is {5 + 5} times better thansimple HTML and CSS

;

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(myElement);

25 / 30

React ES6 modules depend on ________.

26 / 30

The below code is an example of? import React from 'react';
import ReactDOM from 'react-dom/client';

const myElement = React.createElement('h1', {}, 'Nice to meet you!');

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(myElement);

27 / 30

What will be the output of code below? import React from 'react';
import ReactDOM from 'react-dom/client';

ReactDOM.render(

Good

, document.getElementById('sunny'));

28 / 30

Which of these operators allows us to quickly copy all or part of the existing array into another array?

29 / 30

What will be the output of code below? import React from 'react';
import ReactDOM from 'react-dom/client';

ReactDOM.render(

Hello

, document.getElementById('root'));

30 / 30

What is the necessary requirement of the environment for creating react app?

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