Free Building React App Q&A - Get Started with React

Is the use of JSX mandatory to develop with React?

No

Yes

Sometimes

Correct! Wrong!

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

True

False

Correct! Wrong!

About hooks it is incorrect to say:

We can create our own hooks.

Hooks work inside classes and allow you to use React without classes.

Hooks don't work inside classes and allow you to use React without classes.

Hooks are functions that allow you to hook into React's state and lifecycle features from within functional components.

Correct! Wrong!

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

2

4

3

6

Correct! Wrong!

Props can be modified in child component directly like state

False

True

Correct! Wrong!

About lists in React, why should we use "keys"?

Keys help React identify which items have changed.

The braces interrupt the information listing flow.

Keys are not mandatory.

The keys are mandatory to prevent the application from stopping.

Correct! Wrong!

We can integrate reactJS in any of the existing web app

True

False

Correct! Wrong!

FREE Building React App Questions and Answers

Is the use of JSX mandatory to develop with React?

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

About hooks it is incorrect to say:

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

Props can be modified in child component directly like state

About lists in React, why should we use "keys"?

We can integrate reactJS in any of the existing web app

FREE React Javascript Questions and Answers

FREE Introducing React Hooks Questions and Answers

Is the use of JSX mandatory to develop with React?

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

About hooks it is incorrect to say:

What is the result of the expression const [add, setSum] = useState(0) setSum(add + 4) setSum(adding - (1x2))

Props can be modified in child component directly like state

About lists in React, why should we use "keys"?

We can integrate reactJS in any of the existing web app

Premium Tests $49/moFREE December-2024

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

Premium Tests $49/mo
FREE December-2024