ReactJs Basic Quiz

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#1

ReactJS Basic Quiz- React Component

Post your answers!

  1. Which of the following is used in React.js to increase performance?

A. Virtual DOM
B. Original DOM
C. Both A and B
D. None of the above

2.Identify the one which is used to pass data to components from outside

A. Render with Arguments
B. setState
C. PropTypes
D.props

  1. In which language is React.js written?

A. Python
B. JavaScript
C. JAva
D. PHP

  1. Identify the command used to create a React app.

A. npm install create-react-app
B. npm install -g create-react-app
C. install -g create-react-app
D. None of the above

5.How many elements can a valid react component return?

A. 1
B. 2
C. 3
D. 4

6.A state in React.js is also known as?

A. The internal storage of the component
B. External storage of the component
C. Permanent Storage
D. All of the above

Have a wonderful time learning!
Athira| TA EdYoda

1 Like
#2

1-virtual dom
2-setstate
3-javascript
4-npm install -g create-react-app
5-1
6-internal storage of the component

2 Likes
#3
  1. A. Virtual DOM
  2. D.props
  3. B. JavaScript
  4. A. npm install create-react-app
  5. A. 1
  6. A. The internal storage of the component
1 Like
#4

yes aman agarwal
is right in second it should be props right answer not state my answer is wrong but mam can u tell us the correct answer of question 4 we use command npm install create-react-app but in google it show some different answer like npm install -g create-react-app

1 Like
#5

Right answers:

  1. Which of the following is used in React.js to increase performance?

A. Virtual DOM
B. Original DOM
C. Both A and B
D. None of the above

2.Identify the one which is used to pass data to components from outside

A. Render with Arguments
B. setState
C. PropTypes
D.props

  1. In which language is React.js written?

A. Python
B. JavaScript
C. JAva
D. PHP

  1. Identify the command used to create a React app.

A. npm install create-react-app
B. npm install -g create-react-app
C. install -g create-react-app
D. None of the above

5.How many elements can a valid react component return?

A. 1
B. 2
C. 3
D. 4

6.A state in React.js is also known as?

A. The internal storage of the component
B. External storage of the component
C. Permanent Storage
D. All of the above

1 Like