FREE Building React App Questions and Answers

About hooks it is incorrect to say:

Hooks don't 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.

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

Correct! Wrong!

We can integrate reactJS in any of the existing web app

False

True

Correct! Wrong!

Is the use of JSX mandatory to develop with React?

Yes

Sometimes

Correct! Wrong!

What is the result of the expression

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

Correct! Wrong!

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

False

True

Correct! Wrong!

Props can be modified in child component directly like state

True

False

Correct! Wrong!

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

Keys are not mandatory.

The braces interrupt the information listing flow.

Keys help React identify which items have changed.

The keys are mandatory to prevent the application from stopping.

Correct! Wrong!

FREE Building React App Questions and Answers

About hooks it is incorrect to say:

We can integrate reactJS in any of the existing web app

Is the use of JSX mandatory to develop with React?

What is the result of the expression

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

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

Props can be modified in child component directly like state

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

FREE Introducing React Hooks Questions and Answers

FREE React Javascript Questions and Answers

About hooks it is incorrect to say:

We can integrate reactJS in any of the existing web app

Is the use of JSX mandatory to develop with React?

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

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

Props can be modified in child component directly like state

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

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