FREE Building React App Questions and Answers

About hooks it is incorrect to say:

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.

We can create our own hooks.

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

Correct! Wrong!

What is the result of the expression

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

Correct! Wrong!

We can integrate reactJS in any of the existing web app

True

False

Correct! Wrong!

Props can be modified in child component directly like state

False

True

Correct! Wrong!

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

True

False

Correct! Wrong!

Is the use of JSX mandatory to develop with React?

Yes

Sometimes

Correct! Wrong!

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

The keys are mandatory to prevent the application from stopping.

The braces interrupt the information listing flow.

Keys help React identify which items have changed.

Keys are not mandatory.

Correct! Wrong!

FREE Building React App Questions and Answers

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))

We can integrate reactJS in any of the existing web app

Props can be modified in child component directly like state

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

Is the use of JSX mandatory to develop with React?

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:

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

We can integrate reactJS in any of the existing web app

Props can be modified in child component directly like state

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

Is the use of JSX mandatory to develop with React?

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