FREE Building React App Questions and Answers

Props can be modified in child component directly like state

False

True

Correct! Wrong!

What is the result of the expression

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

Correct! Wrong!

About hooks it is incorrect to say:

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

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

We can create our own hooks.

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

Correct! Wrong!

We can integrate reactJS in any of the existing web app

True

False

Correct! Wrong!

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

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!

Is the use of JSX mandatory to develop with React?

Sometimes

Yes

Correct! Wrong!

FREE Building React App Questions and Answers

Props can be modified in child component directly like state

What is the result of the expression

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

About hooks it is incorrect to say:

We can integrate reactJS in any of the existing web app

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

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

Is the use of JSX mandatory to develop with React?

FREE React Javascript Questions and Answers

FREE Introducing React Hooks Questions and Answers

Props can be modified in child component directly like state

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

About hooks it is incorrect to say:

We can integrate reactJS in any of the existing web app

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

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

Is the use of JSX mandatory to develop with React?

Premium Tests $49/moFREE April-2024

What is the result of the expression

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

Premium Tests $49/mo
FREE April-2024